Yong Chan Kim, Young Sun Kim. Rough Approximations on Preordered Sets. Int. J. Fuzzy Logic and Intelligent Systems, 11(4):299-304, 2011. [doi]
@article{KimK11b-0,
title = {Rough Approximations on Preordered Sets},
author = {Yong Chan Kim and Young Sun Kim},
year = {2011},
doi = {10.5391/IJFIS.2011.11.4.299},
url = {http://dx.doi.org/10.5391/IJFIS.2011.11.4.299},
researchr = {https://researchr.org/publication/KimK11b-0},
cites = {0},
citedby = {0},
journal = {Int. J. Fuzzy Logic and Intelligent Systems},
volume = {11},
number = {4},
pages = {299-304},
}