SUBBA RAO, M. V. A Property of Transformations over a Sequence of Spaces. The Journal of the Indian Mathematical Society, [S. l.], v. 22, n. 2, p. 59–64, 1958. DOI: 10.18311/jims/1958/16976. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16976. Acesso em: 27 apr. 2024.