CARLITZ, L. Note on a $q$-identity. Mathematica Scandinavica, Berkeley, CA, United States, v. 3, p. 281–282, 1955. DOI: 10.7146/math.scand.a-10447. Disponível em: https://journals.msp.org/mscand/article/view/2875. Acesso em: 8 sep. 2026.