Xiao-Ping Yang, Tong-Jun Li. The minimization of axiom sets characterizing generalized approximation operators. Inf. Sci., 176(7):887-899, 2006. [doi]
@article{YangL06:14,
title = {The minimization of axiom sets characterizing generalized approximation operators},
author = {Xiao-Ping Yang and Tong-Jun Li},
year = {2006},
doi = {10.1016/j.ins.2005.01.012},
url = {http://dx.doi.org/10.1016/j.ins.2005.01.012},
researchr = {https://researchr.org/publication/YangL06%3A14},
cites = {0},
citedby = {0},
journal = {Inf. Sci.},
volume = {176},
number = {7},
pages = {887-899},
}