OBERLIN, Daniel M. Oscillatory integrals with polynomial phase. Mathematica Scandinavica, Berkeley, CA, United States, v. 69, p. 45–56, 1991. DOI: 10.7146/math.scand.a-12368. Disponível em: https://journals.msp.org/mscand/article/view/1305. Acesso em: 24 jul. 2026.