IVU Lab - Interaction Visualization Usability Lab

Some Publications

Journal papers
Book chapters
Edited books
International conferences proceedings
National conferences proceedings

Journal papers

LANZILOTTI R., ARDITO C., COSTABILE M. F., DE ANGELI A. (2010). Do patterns help novice evaluators? A comparative study. INTERNATIONAL JOURNAL OF HUMAN COMPUTER STUDIES, doi:10.1016/j.ijhcs.2010.07.005.
ARDITO C., COSTABILE M. F., LANZILOTTI R.(2010). Enjoying cultural heritage thanks to mobile technology. INTERACTIONS. vol (17)3, (May. 2010), pp. 30-33. ACM Press, New York, USA. ISSN:1072-5520 . DOI= http://doi.acm.org/10.1145/1744161.1744169.
ARDITO C., BUONO P., COSTABILE M. F., LANZILOTTI R., PICCINNO A. (2009). Enabling interactive exploration of cultural heritage: an experience of designing systems for mobile devices. KNOWLEDGE TECHNOLOGY AND POLICY. Volume 22, Issue1 (2009), pp. 79-86. doi:10.1007/s12130-009-9079-7.
ARDITO C., BUONO P., COSTABILE M. F., LANZILOTTI R., PEDERSON T., PICCINNO A. (2008). Experiencing the Past through the Senses: An M-Learning Game at Archaeological Parks. IEEE MULTIMEDIA. vol. October-December 2008, pp. 76-81. ISSN: 1070-986X.
COSTABILE M., FOGLI D, MUSSIO P, PICCINNO A. (2007). Visual Interactive Systems for End-User Development: a Model-based Design Methodology. IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS. vol. 37 ISSN: 1083-4427.
ARDITO C., COSTABILE M., DE ANGELI A., PITTARELLO F. (2007). Navigation help in 3D Worlds: some empirical evidences on use of sound. MULTIMEDIA TOOLS AND APPLICATIONS. vol. 33(2), pp. 201-216 ISSN: 1380-7501. doi:10.1007/s11042-006-0060-0 Springer Netherlands.
COSTABILE M., FOGLI D., LANZILOTTI R., MUSSIO P., PICCINNO A. (2006). Supporting Work Practice Through End-User Development Environments. JOURNAL OF ORGANIZATIONAL AND END USER COMPUTING. vol. 18, pp. 43-65 ISSN: 1546-2234. Special Issue on "Technology Interaction Aspects of End User Development".
LANZILOTTI R., COSTABILE M., ARDITO C. (2006). Systematic Evaluation of E-Learning Systems. THE INTERNATIONAL JOURNAL OF INFORMATION SCIENCE FOR DECISION MAKING (on line). ISSN: 1265-499X.
ARDITO C., COSTABILE M., DE MARSICO M., LANZILOTTI R., LEVIALDI S., ROSELLI T., ROSSANO V. (2006). An Approach to Usability Evaluation of e-Learning Applications. UNIVERSAL ACCESS IN THE INFORMATION SOCIETY. vol. 4(3), pp. 270-283 ISSN: 1615-5289.
FOGLI D., PICCINNO A. (2005). Environments to support context and emotion aware visual interaction. JOURNAL OF VISUAL LANGUAGES AND COMPUTING. Vol. 16, pp. 386-405.
COSTABILE M., FOGLI D., FRESTA G., MUSSIO P., PICCINNO A. (2004). Software Environments for End-User Development and Tailoring. PSYCHNOLOGY (on line). vol. 2(1), pp. 99-122 ISSN: 1720-7525.
COSTABILE M., DE ANGELI A., ROSELLI T., LANZILOTTI R., PLANTAMURA P. (2003). Does Hypermedia Really Work for Tutoring Children?. IEEE MULTIMEDIA. vol. 10 (2), pp. 65-69 ISSN: 1070-986X.
COSTABILE M., D. MALERBA EDITORS. (2003). Special Issue on Visual Data Mining. JOURNAL OF VISUAL LANGUAGES AND COMPUTING. pp. 499-501 ISSN: 1045-926X.
COSTABILE M., DE ANGELI A., ROSELLI T., LANZILOTTI R., PLANTAMURA P. (2003). Evaluating the Educational Impact of a Tutoring Hypermedia for Children. INFORMATION TECHNOLOGY IN CHILDHOOD EDUCATION ANNUAL. pp. 289-308 ISSN: 1522-8185.
DE ANGELI A., MATERA M., COSTABILE M., GARZOTTO F., PAOLINI P. (2003). On the Advantages of Systematic Inspection for Evaluating Hypermedia Usability. INTERNATIONAL JOURNAL OF HUMAN-COMPUTER INTERACTION. vol. 15, No 3, pp. 315-355 ISSN: 1044-7318.
BOTTONI P., CHANG S.K., COSTABILE M., LEVIALDI S., MUSSIO P. (2002). Modelling Visual Interactive Systems Through Dynamic Visual Languages. IEEE TRANSACTION ON SYSTEMS MAN AND CYBERNETICS. vol. 32 No. 6 ISSN: 0018-9472. Part A: SYSTEMS AND HUMANS. November 2002.
BOTTONI P., COSTABILE M., LEVIALDI S. (2002). Analyzing, Modelling, and Specifying Visual Interaction. SOFT COMPUTING. vol. 7 No. 1, pp. 9-19 ISSN: 1432-7643.
MATERA M., COSTABILE M., GARZOTTO F., PAOLINI P. (2002). SUE Inspection: an Effective Method for Systematic Usability Evaluation of Hypermedia. IEEE TRANSACTION ON SYSTEMS MAN AND CYBERNETICS. vol. 32, No. 1, pp. 93-103 ISSN: 0018-9472.
COSTABILE M., MATERA M. (2001). Guidelines for Hypermedia Usability Inspection. IEEE MULTIMEDIA. vol. 8, N. 1, pp. 66-69 ISSN: 1070-986X.
COSTABILE M., P. BUONO. (2001). Human-Computer Interaction. ERCIM NEWS. vol. 46, pp. 55-56 ISSN: 0926-4981.
LANZILOTTI R., COSTABILE M., ARDITO C., DE ANGELI A. (2006). eLSE Methodology: a Systematic Approach to the e-Learning Systems Evaluation. EDUCATIONAL TECHNOLOGY & SOCIETY. ISSN: 1176-3647. in print.

Book chapters

COSTABILE M. F., MUSSIO P., PARASILITI PROVENZA L., PICCINNO A. (2009). Supporting End Users to Be Co-designers of Their Tools. In: PIPEK V., ROSSON M.B., DE RUYTER B., WULF V.. End-User Development. vol. LNCS 5435, p. 70-85, BERLIN / HEIDELBERG: Springer, ISBN/ISSN: 978-3-642-00425-4, doi: 10.1007/978-3-642-00427-8.
ARDITO C., BUONO P., COSTABILE M., LANZILOTTI R., PEDERSON T. (2007). An Augmented Reality Game on Standard Mobile Phones for Exploring History at Archaeological Parks. In: R. Meersman, Z. Tari, P. Herrero et al. Eds. On the Move to Meaningful Internet Systems. (vol. LNCS 4805, pp. 357-366). BERLIN: Springer (Germany). ISBN: 978-3-540-76887-6.
COSTABILE M., FOGLI D., MUSSIO P., PICCINNO A. (2006). End-User Development: the Software Shaping Workshop Approach. In H.LIEBERMAN, F.PATERNO', V.WULF EDS. End User Development. (pp. 183-205). DORDRECHT: Springer (NETHERLANDS).
ARDITO C., BUONO P., COSTABILE M. (2005). The Challenge of Visualizing Patient Histories on a Mobile Device. In COSTABILE M., PATERNO' F. Human-Computer Interaction - INTERACT 2005. (vol. LNCS 3585, pp. 942-945). ISBN: 3-540-28943-7. BERLIN: Springer (GERMANY).
BUONO P., COSTABILE M. (2005). Visualizing Association Rules in a Framework for Visual Data Mining. In M. HEMMJE ET AL. From Integrated Publication and Informations Systems to Virtual Information and Knowledge Environments. (vol. LNCS 3379, pp. 221-231). ISBN: 3-540-24551-0. BERLIN: Springer (GERMANY).
APPICE A., BUONO P. (2005). Analyzing multi-level spatial association rules through a graph-based visualization. In: Esposito, F. IEA/AIE 2005 (vol. LNCS 3533, pp. 448-458). ISBN 978-3-540-26551-1. Berlin: Springer (Germany).
ARDITO C., COSTABILE M., DE MARSICO M., LANZILOTTI R., LEVIALDI S., PLANTAMURA P., ROSELLI T., ROSSANO V., TERSIGNI M. (2004). Towards Guidelines for Usability of e-Learning Applications. In C. STARY AND C. STEPHANIDIS EDS. User-Centered Interaction Paradigms for Universal Access in the Information Society. (vol. LNCS 3196, pp. 185-202). HEIDELBERG: Springer-Verlag (GERMANY).
DEGEMMIS M., LOPS P., SEMERARO G., COSTABILE M., GUIDA S.P., LICCHELLI O. (2004). Improving Collaborative Recommender Systems by means of User Profil. In C.-M. KARAT, J. BLOM, AND J. KARAT. Designing Personalized User Experiences for eCommerce, Kluwer Academic. (pp. 253-274).
BUONO P., COSTABILE M., GUIDA S.P., PICCINNO A. (2002). Integrating User Data and Collaborative Filtering in a Web Recommendation System. In REICH, S., TZAGARAKIS, M.M., AND DEBRA, P.M.E. in Hypermedia: Openness, Structural Awareness, and Adaptivity. (vol. LNCS 2266, pp. 315-321). : Springer Verlag.
COSTABILE M., FOGLI D., FRESTA G., MUSSIO P., PICCINNO A. (2002). Computer Environments for Improving End-User Accessibility. In N. CARBONELL C. STEPHANIDIS. Universal Access: Theoretical Perspectives, Practice and Experience. (vol. LNCS 2615, pp. 129-140).
COSTABILE M. (2001). Usability in the Software Life Cycle. In S.K. CHANG. In Handbook of Software Engineering and Knowledge Engineering. (vol. 1, pp. 179-192). : S.K. CHANG ED., World Scientific.

Edited Books

BUONO P., COSTABILE M., PATERNO' F., SANTORO C. (2005). INTERACT '05 - Adjunct Proceedings. Di BUONO P., COSTABILE M., PATERNO' F., SANTORO C. ISBN: 88-8231-341-7. BARI: Giuseppe Laterza (ITALY).
COSTABILE M., PATERNO' F. (2005). Human-Computer Interaction - INTERACT 2005. Di COSTABILE M., PATERNO' F. (vol. LNCS 3585). ISBN: 3-540-28943-7. BERLIN: Springer (GERMANY).
COSTABILE M. (2004). Advanced Visual Interfaces AVI 2004. Di COSTABILE M. ISBN: 1-58113-867-9. NEW YORK: ACM Press (UNITED STATES).

International conferences proceedings

ARDITO C., COSTABILE M., DE ANGELI A., LANZILOTTI R. (2006). Systematic Evaluation of e-Learning Systems: an Experimental Validation. Nordic Conference on Human-Computer Interaction 2006 (NordiCHI 2006), Oslo, Norway, October 14-18, 2006.(pp. 195-202).
PEDERSON T., LANZILOTTI R., MONTINARO F., COSTABILE M. (2006). Thinking out of the box – user experience as viewed from an egocentric interaction perspective. Workshop "User Experience - Towards a unified view" at the 4th Nordic Conference on Human-Computer Interaction 2006 (NordiCHI 2006), Oslo, Norway, October 14-18, 2006. (pp. 45-50).
ARDITO C., BUONO P., COSTABILE M., LANZILOTTI R. (2006). Two Different Interfaces to Visualize Patient Histories on a PDA. MobileHCI '06, Helsinki, Finland. September 12-15, 2006. (pp. 37-40).
BUONO P, ARDITO C, COSTABILE M., LANZILOTTI R, PICCINNO A. (2006). DAE: a Visualization-Based System for Data Analysis. Visual Languages and Human-Centric Computing 2006 (VL/HCC 2006), Brighton, United Kingdom. September, 4-8, 2006. (pp. 147-150).
COSTABILE M., FOGLI D., LANZILOTTI R., MUSSIO P., PICCINNO A. (2006). Collaborating through Computers: the Software Shaping Workshop Approach. International Conference on Distributed Multimedia Systems (DMS'2006). August 30 - September 1, 2006. In print.
COSTABILE M., FOGLI D., MARCANTE A., MUSSIO P., PICCINNO A. (2006). Design, Specification and Implementation of Tailorable Visual Interactive Systems. Int. Conference on Software Engineering and Knowledge Engineering (SEKE'06), San Francisco Bay, USA. July 5-7, 2006. (pp. 450-455).
COSTABILE M., FOGLI D., MUSSIO P., PARASILITI L., PICCINNO A. (2006). Designing Non-Ambiguous and Viable Visual Interactive Systems. International Conference on Distributed Multimedia Systems (DMS'2006). August 30 - September 1, 2006. (pp. 137-140).
ARDITO C., BUONO P., COSTABILE M., LANZILOTTI R. (2006). Systematic Inspection of Information visualization Systems. Workshop at International Conference on Advanced Visual Interface 2006 (AVI 2006), Venice, Italy, May 23-26, 2006.
ARDITO C., COSTABILE M., LANZILOTTI R. (2006). Gender and Virtual Navigation: an Exploratory Study. Workshop at International Conference on Advanced Visual Interface 2006 (AVI 2006), Venice, Italy, May 23-26, 2006.
COSTABILE M., FOGLI D., MARCANTE A., PICCINNO A. (2006). Supporting Interaction and Co-evolution of Users and Systems. International Conference on Advanced Visual Interface 2006 (AVI 2006), Venice, Italy. May 23-26, 2006.
BUONO P., COSTABILE M., COVINO E., PANI G. (2005). A visual tool for multidimensional data analysis. International Workshop on Visual Languages and Computing. September 5-7. (pp. 333-338).
COSTABILE M., DE MARSICO M., LANZILOTTI R., PLANTAMURA V. L., ROSELLI T. (2005). On the Usability Evaluation of E-Learning Applications. HICSS-38 Conference, Waikoloa, Hawaii, USA. January 3-6, 2005.
PICCINNO A. (2005). A Component-Based approach to support End-User Development. HCI International 2005 Conference. July 22-27, 2005. Las Vegas, Nevada, USA.
COSTABILE M., FOGLI D., MUSSIO P., PICCINNO A. (2005). A meta-design approach to End-User Development. IEEE Symposium on Visual Languages and Human-Centric Computing, VL/HCC'05. September 20-24, 2005. (pp. 308-310). Dallas, Texas, USA.
LANZILOTTI R., ARDITO C., COSTABILE M., DE ANGELI A. (2005). E-learning evaluation: A cross-technique comparison. Workshop at INTERACT 2005 tenth IFIP TC13 International Conference on Human-Computer Interaction, Rome, September, 12-15, Italy.
BUONO P. , ARIS A., PLAISANT C., KHELLA A., SHENEIDERMAN B. (2005). Interactive Pattern Search in Time Series. Visualization and Data Analysis, VDA 2005. January 16-20, 2005. (pp. 175-186). San Jose, CA USA, SPIE, Washington DC,
COSTABILE M., FOGLI D., FRESTA G., MUSSIO P., PICCINNO A. (2004). Virtual Workshops for Human-Centric Computing. IEEE Symposium on Visual Languages and Human-Centric Computing, VL/HCC'04 Rome, Italy. September 26-29, 2004. (pp. 65-68).
COSTABILE M., FOGLI D., FRESTA G., MUSSIO P., PICCINNO A. (2004). "Virtual Workshops to Support Reflection in Action", proc. Workshop on "Designing for Reflective Practitioners”. CHI Conference, Wien, Austria. April, 25th, 2004. http://www.ics.uci.edu/~redmiles/chiworkshop/.
DEGEMMIS M., LOPS P., SEMERARO G., COSTABILE M., LICCHELLI O., GUIDA S. (2004). A hybrid collaborative recommender system based on user profiles. 6th International Conference on Enterprise Information Systems ICEIS, Porto, Portugal. April 14-17, 2004. (pp. 162-169).
ARDITO C., DE MARSICO M., LANZILOTTI R., LEVIALDI S., ROSELLI T., ROSSANO V., TERSIGNI M. (2004). Usability of E-Learning Tools, in Proceedings of Advanced Visual Interface 2004 (AVI 2004), Gallipoli, Italy, May 25-28, 2004, (pp. 80-84).
BRUZZESE D., BUONO P. (2004). Combining Visual Techniques for Association Rules Exploration. AVI 2004, May 25-28, 2004. (pp. 381-384). Gallipoli, Lecce, Italy,
BUONO P., COSTABILE M., GRILLI D., GUIDA S.P., LOPS P., SEMERARO G. (2003). Integrating machine learning and filtering techniques to improve recommendations. CHI '03 Workshop on Designing Personalized User Experiences for eCommerce: Theor. Fort Lauderdale, USA, 6-7 April 2003.
BUONO P., COSTABILE M., GUIDA S.P., LANZILOTTI R., PICCINNO A. (2003). Improving Web Interaction trough Personalization. HCI International 03. Crete, Greece, June 22-27, 2003. (pp. 522-526).
COSTABILE M., D. FOGLI, G. FRESTA, R. LANZILOTTI, P. MUSSIO, A. PICCINNO. (2003). Tailoring a cooperative environment through Software Shaping Workshops. 8th European Conference of Computer-supported Cooperative Work (ECSCW 03), Helsinki. September 14-18, 2003. (pp. 10-12). Proc. Workshop on Tailoring Cooperation.
COSTABILE M., DE ANGELI A., PITTARELLO F., ARDITO C. (2003). Can audio help navigating in virtual environments? An experimental evaluation. INTERACT 2003, Zurich, Switzerland. September 1-5, 2003. (pp. 733-736).
FOGLI D., PICCINNO A., SALVI D. (2003). What Users See Is What Users Need. 9th International Conference on Distributed Multimedia Systems (DMS), Miami, Florida, USA, September 24-26, 2003. (pp. 335-340).
COSTABILE M., FOGLI D., FRESTA G., LANZILOTTI R., MUSSIO P., PICCINNO A. (2003). Software Environments that Support End-User Development. Symposium on Human-Computer Interaction HCITALY. Torino, November 4-5, 2003. (pp. 48-52).
COSTABILE M., FOGLI D., FRESTA G., MUSSIO P., PICCINNO A. (2003). Building environments for End-User Development and Tailoring. IEEE Symposia on Human Centric Computing Languages and Environments. Auckland, New Zeeland, October 28-31, 2003. (pp. 31-38).
COSTABILE M., FOGLI D., LETONDAL C., MUSSIO P., PICCINNO A. (2003). Domain-Expert Users and their Needs of Software Development. Special Session on EUD, UAHCI Conference. Crete, Greece, June 22-27, 2003. (pp. 532-536).
COSTABILE M., FOGLI D., MUSSIO P., PICCINNO A. (2003). Software Shaping Workshops: Environments to Support End-User Development. CHI '03 Workshop on. Fort Lauderdale, USA, 6 April 2003.
BOTTONI P., COSTABILE M., LEVIALDI S., PICCINNO A. (2002). Toward Formal Measures of Usability for Visual Interactive Systems. Proc. of Symposia on Human Centric Computing Languages and Environments HCC 2002. Arlington (Virginia), September 3-6, 2002. (pp. 188-197). IEEE Computer Society Press.
BUONO P. , COSTABILE M., JAESCHKE G., HEMMJE M. (2002). Analysing Data Trough Visualizations in a Web-based Trade Fair System. The fourtheenth International Conference on Software Engineering and Knowledge E. Ischia, Italy, July 15-19, 2002, ACM Press. (pp. 579-582).
BOTTONI P., COSTABILE M., FOGLI D., LEVIALDI S., MUSSIO P. (2001). Multilevel Modelling and Design of Visual Interactive Systems. HUMAN-CENTRIC COMPUTING SYMPOSIA HCC 2001. Stresa (Italy), September 5-7, 2001. (pp. 256-263). IEEE Computer Society Press.
BOTTONI P., COSTABILE M., LEVIALDI S., MUSSIO P. (2001). From User Notations to Accessible Interfaces through Visual Languages. Proc. of UA-HCI 2001. New Orleans (USA). (pp. 252-256).
COSTABILE M., DE ANGELI A., MATERA M. (2001). Guiding Usability Evaluators During Hypermedia Inspection. Proc. of HUMAN-CENTRIC COMPUTING SYMPOSIA HCC 2001. Stresa (Italy), September 5-7, 2001. (pp. 332-333). IEEE Computer Society Press.
COSTABILE M., DE ANGELI A., ROSELLI T. (2001). Experimental Evaluation of an Intelligent Tutoring Hypermedia. Proc of PC-HCI 2001. Patras (Greece), December 7-9, 2001. (pp. 135-139). Typorama Publications.
PAUSELLI E., DATRI A., BUONO P., COSTABILE M., HEMMJE M., JSCHKE G. , MUSCOGIURI C. (2001). FAIRWIS Usage for Virtual Learning in Student Micro Enterprises. ED-MEDIA 2001. 2001, Tampere, Finland, June 25-30. (pp. 1465-1467).
BARBINI F., BUONO P., COSTABILE M., DATRI A., PAUSELLI E., SWIFT S., URSA Y. (2001). Requirement Analysis for On-line Trade Fairs. OESSEO 2001. Rome, September 14-15 2001. (pp. 142-146).
BUONO P., COSTABILE M., DATRI A., HEMMJE M., JSCHKE G., MUSCOGIURI C., PAUSELLI E., BARBINI F. (2001). FAIRWIS: A System for Improving On-line Trade Fair Services. E-work and E-commerce E2001. Venezia, Italy, October 17-19, 2001. (pp. 519-525).
BUONO P., COSTABILE M., PICCINNO A., MINARDI G. (2001). UPE: The FAIRWIS Personalisation Component. OESSEO 2001. Rome, 14-15 September 2001. (pp. 153-154).
BUONO P., COSTABILE M., PICCINNO A., ROSELLI T.(2001). Web Recommendation Systems: The Case of On-line Trade Fairs. PC-HCI 2001. Patras, Greece, December 7-9. (pp. 405-406).
BUONO P., COSTABILE M., LISI F.A. (2001). Supporting Data Analysis Through Visualizations. Workshop on Visual Data Mining. Freiburg, Germany, 4 Settembre 2001. (pp. 67-78).
BUONO P., COSTABILE M., HEMMJE M., JSCHKE G., MUSCOGIURI C. (2001). Providing On-line Trade Fair Services with FAIRWIS. OESSEO 2001. Rome, 14-15 September 2001. (pp. 147-152).

National conferences proceedings

ARDITO C., BUONO P., COSTABILE M. (2005). Visualizing Patient Histories on Mobile Devices. AICA 2005, Udine, Italy. October 5-7. (pp. 579-586).
BUONO P., COSTABILE M. (2005). How visualization may help in understanding association rules. HCITALY 2005. September 13. (pp. 100-104).
COSTABILE M., FOGLI D., FRESTA G., MARCANTE A., MUSSIO P., PICCINNO A. (2005). Meta-design for supporting users to shape their software solutions. HCItaly 2005. September 12-13, 2005. (pp. 35-39). Roma, Italy.
BUONO P. (2003). Analysing Association Rules with an Interactive Graph-Based Technique. Special Session on Visual Data Mining, HCI International 2003. June 22-27, 2003. (pp. 675-679). Crete, Greece.
ARDITO C., COSTABILE M., DE MARSICO M., LANZILOTTI R., LEVIALDI S., ROSELLI T., ROSSANO V., TERSIGNI M. (2004). “Una Proposta di Criteri di Valutazione per l’E-Learning”. AICA 2004, Benevento. September 28-30, 2004. (pp. 567-580).
BUONO P . (2004). Visual Data Analysis: the case of Trade Fairs. AICA 2004, September 28-30, 2004. (pp. 733-743). Benevento, Italy.
DE GEMMIS M., GUIDA S.P., LOPS P., SEMERARO G., COSTABILE M. (2003). Improving Recommendations by Integrating Collaborative Filtering and Supervised Learning Techniques. Symposium on Human-Computer Interaction HCITALY. Torino, November 4-5, 2003. (pp. 60-66).
BOTTONI P., COSTABILE M., LEVIALDI S., MUSSIO P. (2001). Dalle Notazioni degli Utenti a Interfacce Visuali Usabili. Proc. of HCItaly 2001 Symposium. Firenze (Italy), September 26, 2001. (pp. 84-89).
BUONO P., COSTABILE M., DI FONZO M. (2001). Tecniche di Visualizzazione a supporto dell'analisi dei dati in FAIRWIS. HCItaly '01. Firenze, Italy, September 26-28 2001. (pp. 417-422).