Yong Chan Kim, Young Sun Kim. L-upper Approximation Operators and Join Preserving Maps. Int. J. Fuzzy Logic and Intelligent Systems, 14(3):222-230, 2014. [doi]
@article{KimK14-45,
title = {L-upper Approximation Operators and Join Preserving Maps},
author = {Yong Chan Kim and Young Sun Kim},
year = {2014},
doi = {10.5391/IJFIS.2014.14.3.222},
url = {http://dx.doi.org/10.5391/IJFIS.2014.14.3.222},
researchr = {https://researchr.org/publication/KimK14-45},
cites = {0},
citedby = {0},
journal = {Int. J. Fuzzy Logic and Intelligent Systems},
volume = {14},
number = {3},
pages = {222-230},
}