PRYCE, J. D. Non Self-Determining Faces - An Example. MATHEMATICA SCANDINAVICA, [S. l.], v. 33, p. 21–22, 1973. DOI: 10.7146/math.scand.a-11467. Disponível em: https://www.mscand.dk/article/view/11467. Acesso em: 2 may. 2024.