THACKERAY, J. Francis. Doubling the age and size of the universe at the IAU in Rome in 1952: Contributions by David Thackeray, Walter Baade and Harlow Shapley. South African Journal of Science, [S. l.], v. 116, n. 1/2, 2020. DOI: 10.17159/sajs.2020/6363. Disponível em: https://sajs.co.za/article/view/6363. Acesso em: 13 jul. 2024.