The Collection Fusion Problem. - Ellen M. Voorhees; Narendra Kumar Gupta; Ben Johnson-Laird (TREC, 1994)

Learning Collection Fusion Strategies for Information Retrieval. - Geoffrey G. Towell; Ellen M. Voorhees; Narendra Kumar Gupta; Ben Johnson-Laird (ICML, 1995)

Learning Collection Fusion Strategies. - Ellen M. Voorhees; Narendra Kumar Gupta; Ben Johnson-Laird (SIGIR, 1995)