D. Millen, J. Feinberg, и B. Kerr. Proceedings of the SIGCHI conference on Human Factors in computing systems, стр. 111--120. New York, NY, USA, ACM, (2006)
R. Keller, S. Wolfe, J. Chen, J. Rabinowitz, и N. Mathe. Selected papers from the sixth international conference on World Wide Web, стр. 1103--1114. Essex, UK, Elsevier Science Publishers Ltd., (1997)
J. Thom-Santelli, M. Muller, и D. Millen. CHI '08: Proceeding of the twenty-sixth annual SIGCHI conference on Human factors in computing systems, стр. 1041--1044. New York, NY, USA, ACM, (2008)
D. Millen, J. Feinberg, и B. Kerr. Proceedings of the SIGCHI conference on Human Factors in computing systems, стр. 111--120. New York, NY, USA, ACM, (2006)