BRAUN, Elisabeth Esser; MUÑOZ, Elena. Lief Kr. Tobiassen. Reluctant door : the right of access to the United Nations. Washington D.C. : Public Affairs Press, 1969. Foro Internacional, México, Ciudad de México, v. 12, n. 1, p. 122–124, 1971. Disponível em: https://forointernacional.colmex.mx/index.php/fi/article/view/507. Acesso em: 10 may. 2025.