ANDERSEN, Lars Dovling. On edge-colorings of graphs. Mathematica Scandinavica, Berkeley, CA, United States, v. 40, p. 161–175, 1977. DOI: 10.7146/math.scand.a-11685. Disponível em: https://journals.msp.org/mscand/article/view/1960. Acesso em: 25 jul. 2026.