M. S. BIRADAR. Forbidden Subgraphs for Planar Blict and Blitact Graphs. International Journal of Mathematics And its Applications, [S. l.], v. 4, n. 2 - B, p. 19–26, 2016. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/1021. Acesso em: 20 may. 2024.