DIRAC, G. On Arbitrarily Traceable Graphs. MATHEMATICA SCANDINAVICA, [S. l.], v. 31, p. 319–378, 1972. DOI: 10.7146/math.scand.a-11439. Disponível em: https://www.mscand.dk/article/view/11439. Acesso em: 5 may. 2024.