Nemron, Ikorong Anouk Gilbert. “An Original Speech Around the Difficult Part of the Berge Conjecture (Solved by Chudnovsky, Robertson, Seymour and Thomas)”. Communications in Mathematics and Applications 1, no. 3 (December 25, 2010): 195–206. Accessed May 2, 2024. https://www.rgnpublications.com/journals/index.php/cma/article/view/126.