Susan V. Vrbsky, Jane W.-S. Liu. Producing approximate answers to set- and single-valued queries. Journal of Systems and Software, 27(3):243-251, 1994. [doi]
@article{VrbskyL94,
title = {Producing approximate answers to set- and single-valued queries},
author = {Susan V. Vrbsky and Jane W.-S. Liu},
year = {1994},
doi = {10.1016/0164-1212(94)90046-9},
url = {http://dx.doi.org/10.1016/0164-1212(94)90046-9},
researchr = {https://researchr.org/publication/VrbskyL94},
cites = {0},
citedby = {0},
journal = {Journal of Systems and Software},
volume = {27},
number = {3},
pages = {243-251},
}