NAGARAJAN, S.; MISRA, U. <b>The strongly generalized double difference &chi; sequence spaces defined by a modulus</b> - doi: 10.4025/actascitechnol.v35i4.16184. Acta Scientiarum. Technology, [S. l.], v. 35, n. 4, p. 739–745, 2013. DOI: 10.4025/actascitechnol.v35i4.16184. Disponível em: https://periodicos.uem.br/actascitechnol/index.php/ActaSciTechnol/article/view/16184. Acesso em: 12 out. 2025.