NILSSON, A. $L^p$-estimates for mixed singular operators. MATHEMATICA SCANDINAVICA, [S. l.], v. 84, n. 2, p. 195–202, 1999. DOI: 10.7146/math.scand.a-13874. Disponível em: https://www.mscand.dk/article/view/13874. Acesso em: 23 nov. 2024.