LIO, P. Y. . Editorial, Volume 17 (2019). JOURNAL OF ADVANCES IN MATHEMATICS, [S. l.], v. 17, 2019. DOI: 10.24297/jam.v17i.8583. Disponível em: https://rajpub.com/index.php/jam/article/view/8583. Acesso em: 7 apr. 2025.