Ryen W. White
and Ian Ruthven
and Joemon M. JoseSIGIR '05: Proceedings of the 28th annual international ACM SIGIR conference on Research and development in information retrieval
35--42
(2005)
Ian RuthvenSIGIR '03: Proceedings of the 26th annual international ACM SIGIR conference on Research and development in informaion retrieval
213--220
(2003)