CARLITZ, L. Explicit evaluation of certain exponential sums. MATHEMATICA SCANDINAVICA, [S. l.], v. 44, p. 5–16, 1979. DOI: 10.7146/math.scand.a-11793. Disponível em: https://www.mscand.dk/article/view/11793. Acesso em: 4 may. 2024.