MOSLEHIAN, M. S.; ZAMANI, A. Mappings preserving approximate orthogonality in Hilbert $C^*$-modules. MATHEMATICA SCANDINAVICA, [S. l.], v. 122, n. 2, p. 257–276, 2018. DOI: 10.7146/math.scand.a-102945. Disponível em: https://www.mscand.dk/article/view/102945. Acesso em: 26 apr. 2024.