Joan M. Morrissey, C. J. van Rijsbergen. A Formal Treatment of Missing and Imprecise Information. In Proceedings of the Tenth Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, New Orleans, Louisiana, USA, June 3-5, 1987. pages 149-156, ACM, 1987. [doi]
@inproceedings{MorrisseyR87, title = {A Formal Treatment of Missing and Imprecise Information}, author = {Joan M. Morrissey and C. J. van Rijsbergen}, year = {1987}, tags = {C++}, researchr = {https://researchr.org/publication/MorrisseyR87}, cites = {0}, citedby = {0}, pages = {149-156}, booktitle = {Proceedings of the Tenth Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, New Orleans, Louisiana, USA, June 3-5, 1987}, publisher = {ACM}, }