BANG, Thoger. Congruence properties of Tchebycheff polynomials. MATHEMATICA SCANDINAVICA, [S. l.], v. 2, p. 326–332, 1954. DOI: 10.7146/math.scand.a-10418. Disponível em: https://tidsskrift.dk/math/article/view/10418. Acesso em: 14 aug. 2026.