SEN, R. N. On Pairs of Teleparallelisms. The Journal of the Indian Mathematical Society, [S. l.], v. 17, n. 1, p. 21–32, 1953. DOI: 10.18311/jims/1953/17025. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/17025. Acesso em: 28 apr. 2024.