D. Abrams, R. Baecker, и M. Chignell. Proceedings of the SIGCHI Conference on Human Factors in Computing Systems, стр. 41--48. New York, NY, USA, ACM Press/Addison-Wesley Publishing Co., (1998)
D. Abrams, R. Baecker, и M. Chignell. Proceedings of the SIGCHI conference on Human factors in computing systems, стр. 41-48. New York, NY, USA, ACM Press/Addison-Wesley Publishing Co., (1998)