New Types of Generalized Difference Double A-sequence Spaces Defined by Orlicz function. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 8, n. 2, p. 201–213, 2015. Disponível em: https://www.ejpam.com/index.php/ejpam/article/view/2058. Acesso em: 23 oct. 2024.