Concept based retrieval in classical IR systems

H. P. Giger
1988 Proceedings of the 11th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '88  
doi:10.1145/62437.62461 dblp:conf/sigir/Giger88 fatcat:pqohkuqidncuzkqnzapwkalb74