WENDEL, J. G. Brief Proof of a Theorem of Baxter. MATHEMATICA SCANDINAVICA, [S. l.], v. 11, p. 107–108, 1962. DOI: 10.7146/math.scand.a-10654. Disponível em: https://www.mscand.dk/article/view/10654. Acesso em: 22 nov. 2024.