BOTELHO, Geraldo; TORRES, Leodan A. Generalized adjoints and applications to composition operators. Mathematica Scandinavica, Berkeley, CA, United States, v. 126, n. 2, p. 367–386, 2020. DOI: 10.7146/math.scand.a-119684. Disponível em: https://journals.msp.org/mscand/article/view/186. Acesso em: 24 jul. 2026.