Yan-Lan Zhang, Jinjin Li, Wei-Zhi Wu. On axiomatic characterizations of three pairs of covering based approximation operators. Inf. Sci., 180(2):274-287, 2010. [doi]
@article{ZhangLW10,
title = {On axiomatic characterizations of three pairs of covering based approximation operators},
author = {Yan-Lan Zhang and Jinjin Li and Wei-Zhi Wu},
year = {2010},
doi = {10.1016/j.ins.2009.08.031},
url = {http://dx.doi.org/10.1016/j.ins.2009.08.031},
tags = {rule-based},
researchr = {https://researchr.org/publication/ZhangLW10},
cites = {0},
citedby = {0},
journal = {Inf. Sci.},
volume = {180},
number = {2},
pages = {274-287},
}