Properties of ~ Self-Adjoint and ~ Positive Operators in b- Hilbert Space. Iraqi Journal of Science, [S. l.], v. 59, n. 2C, p. 1100–1104, 2018. Disponível em: https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/382.. Acesso em: 5 may. 2024.