STEELE, J. McA. The Improved UTC System to be Introduced on 1 January 1972. The International Hydrographic Review, [S. l.], v. 49, n. 2, 2015. Disponível em: https://journals.lib.unb.ca/index.php/ihr/article/view/23857. Acesso em: 21 déc. 2024.