PÄIVÄRINTA, L. A note on continuity of pseudodifferential operators in Hardy spaces. MATHEMATICA SCANDINAVICA, [S. l.], v. 55, p. 91–94, 1984. DOI: 10.7146/math.scand.a-12069. Disponível em: https://www.mscand.dk/article/view/12069. Acesso em: 3 may. 2024.