The Identification of Missing Information Resources through the Query Difference Operator.

Michael Minock Marek Rusinkiewicz Brad Perry The Identification of Missing Information Resources through the Query Difference Operator. 304-314 DiSC2_1/out/papers/coopis/03840304.pdf 1999 conf/coopis/1999 CoopIS http://doi.ieeecomputersociety.org/10.1109/COOPIS.1999.792179 db/conf/coopis/coopis99.html#MinockRP99