EL-ZANATI, SAAD; VANDEN EYNDEN, CHARLES; FU, HUNG-LIN. On the α-labeling number of bipartite graphs. Utilitas Mathematica , [S. l.], v. 58, 2000. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/171. Acesso em: 8 may. 2026.