TAMIR, Dan E.; KANDEL, Abraham. Axiomatic Theory of Complex Fuzzy Logic and Complex Fuzzy Classes. INTERNATIONAL JOURNAL OF COMPUTERS COMMUNICATIONS & CONTROL, [S.l.], v. 6, n. 3, p. 562-576, sep. 2011. ISSN 1841-9844. Available at: <http://univagora.ro/jour/index.php/ijccc/article/view/2135>. Date accessed: 18 jan. 2021. doi: https://doi.org/10.15837/ijccc.2011.3.2135.