RAJ, Kuldip; SHARMA, Sunil K. Some generalized difference double sequence spaces defined by a sequence of Orlicz-functions. CUBO, A Mathematical Journal, [S. l.], v. 14, n. 3, p. 167–190, 2012. DOI: 10.4067/S0719-06462012000300011. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/1338. Acesso em: 12 oct. 2025.