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)
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)