[1]
Ǵ. Čupona and S. Markovski, “VECTOR VALUED GROUPOIDS INDUCED BY VARIETIES OF SEMIGROUPS”, Mat. Bilt., vol. 14, no. 1, pp. 27–38, Jan. 1990, Accessed: Oct. 19, 2026. Available: https://bilten.smm.org.mk/index.php/bilten/article/view/1478