Glad Deschrijver, Pavol Král. On the cardinalities of interval-valued fuzzy sets. Fuzzy Sets and Systems, 158(15):1728-1750, 2007. [doi]
@article{DeschrijverK07:0,
title = {On the cardinalities of interval-valued fuzzy sets},
author = {Glad Deschrijver and Pavol Král},
year = {2007},
doi = {10.1016/j.fss.2007.01.005},
url = {http://dx.doi.org/10.1016/j.fss.2007.01.005},
researchr = {https://researchr.org/publication/DeschrijverK07%3A0},
cites = {0},
citedby = {0},
journal = {Fuzzy Sets and Systems},
volume = {158},
number = {15},
pages = {1728-1750},
}