OBERLIN, D. M. Oscillatory integrals with polynomial phase. MATHEMATICA SCANDINAVICA, [S. l.], v. 69, p. 45–56, 1991. DOI: 10.7146/math.scand.a-12368. Disponível em: https://www.mscand.dk/article/view/12368. Acesso em: 27 apr. 2024.