Wei-Zhi Wu, Yee Leung, Ju-Sheng Mi. On characterizations of (::::I, J::::)-fuzzy rough approximation operators. Fuzzy Sets and Systems, 154(1):76-102, 2005. [doi]
@article{WuLM05, title = {On characterizations of (::::I, J::::)-fuzzy rough approximation operators}, author = {Wei-Zhi Wu and Yee Leung and Ju-Sheng Mi}, year = {2005}, doi = {10.1016/j.fss.2005.02.011}, url = {http://dx.doi.org/10.1016/j.fss.2005.02.011}, researchr = {https://researchr.org/publication/WuLM05}, cites = {0}, citedby = {0}, journal = {Fuzzy Sets and Systems}, volume = {154}, number = {1}, pages = {76-102}, }