OLSON, J. B. McKay numbers and heights of characters. MATHEMATICA SCANDINAVICA, [S. l.], v. 38, p. 25–42, 1976. DOI: 10.7146/math.scand.a-11614. Disponível em: https://www.mscand.dk/article/view/11614. Acesso em: 11 apr. 2025.