HOLIK, F.; RONDE, C. de; CHRISTIAENS, W. A new conceptual scheme for the interpretation of the improper mixtures in quantum mechanics . Scientiae Studia, [S. l.], v. 11, n. 1, p. 101-118, 2013. DOI: 10.1590/S1678-31662013000100005. Disponível em: https://www.revistas.usp.br/ss/article/view/78211. Acesso em: 12 abr. 2021.