Rawung, Juwita, Benny Pinontoan, and Winsy Weku. “K-CROSSING CRITICAL ALMOST PLANAR GRAPHS”. Jurnal Ilmiah Sains 13, no. 1 (May 15, 2013): 62–67. Accessed December 5, 2024. https://ejournal.unsrat.ac.id/v3/index.php/JIS/article/view/2034.