CHŌ, Muneo; KO, Eungil; LEE, Ji Eun. Properties of m-complex symmetric operators. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 62, n. 2, p. 233–248, 2017. DOI: 10.24193/subbmath.2017.2.09. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1807. Acesso em: 5 feb. 2025.