Bikov, Aleksandar, and Nedyalko Nenov. “LOWER BOUNDING THE FOLKMAN NUMBERS $F_v(a_1, . . . , a_s;M − 1)$”. Ann. Sofia Univ. Fac. Math. and Inf. 104 (December 12, 2017): 39–53. Accessed November 22, 2024. https://annual.uni-sofia.bg/index.php/fmi/article/view/36.