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B. Schilit, G. Golovchinsky, и M. Price. CHI '98: Proceedings of the SIGCHI conference on Human factors in computing systems, стр. 249--256. New York, NY, USA, ACM Press/Addison-Wesley Publishing Co., (1998)
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J. Kim, R. Farzan, и P. Brusilovsky. HT '08: Proceedings of the nineteenth ACM conference on Hypertext and hypermedia, стр. 233--234. New York, NY, USA, ACM, (2008)
J. Kim, R. Farzan, и P. Brusilovsky. BooksOnline '08: Proceeding of the 2008 ACM workshop on Research advances in large digital book repositories, стр. 25--28. New York, NY, USA, ACM, (2008)