GVOZDJAK, PAVOL; HORÁK, PETER; MESZKA, MARIUSZ; SKUPIEŃ, ZDZISLAW. Strong chromatic index for multigraphs. Utilitas Mathematica , [S. l.], v. 57, 2000. Disponível em: https://utilitasmathematica.com/index.php/Index/article/view/189. Acesso em: 8 may. 2026.