Khadzhiivanov, Nikolay, and Nedyalko Nenov. “GENERALIZED TURAN’S GRAPH THEOREM”. Ann. Sofia Univ. Fac. Math. and Inf. 96 (December 12, 2004): 69–73. Accessed November 21, 2024. https://stipendii.uni-sofia.bg/index.php/fmi/article/view/161.