CARLITZ, L.; OLSON, F. R. A problem in factorization of polynomials. Mathematica Scandinavica, Berkeley, CA, United States, v. 3, p. 28–30, 1955. DOI: 10.7146/math.scand.a-10422. Disponível em: https://journals.msp.org/mscand/article/view/2902. Acesso em: 8 sep. 2026.