Claudi Alsina, Enric Trillas. On the symmetric difference of fuzzy sets. Fuzzy Sets and Systems, 153(2):181-194, 2005. [doi]
@article{AlsinaT05:1,
title = {On the symmetric difference of fuzzy sets},
author = {Claudi Alsina and Enric Trillas},
year = {2005},
doi = {10.1016/j.fss.2005.02.009},
url = {http://dx.doi.org/10.1016/j.fss.2005.02.009},
researchr = {https://researchr.org/publication/AlsinaT05%3A1},
cites = {0},
citedby = {0},
journal = {Fuzzy Sets and Systems},
volume = {153},
number = {2},
pages = {181-194},
}