Kalervo Järvelin, Timo Niemi. An NF:::2::: Relational Interface For Document Retrieval, Restructuring and Aggregation. In Edward A. Fox, Peter Ingwersen, Raya Fidel, editors, SIGIR 95, Proceedings of the 18th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval. Seattle, Washington, USA, July 9-13, 1995 (Special Issue of the SIGIR Forum). pages 102-110, ACM Press, 1995. [doi]
Abstract is missing.