SHADAB AHMAD KHAN; ASHFAQUE A. ANSARI. Some Euler Spaces of Difference Sequences and Matrix Mappings. International Journal of Mathematics And its Applications, [S. l.], v. 5, n. 1 - C, p. 327–341, 2017. Disponível em: https://ijmaa.in/index.php/ijmaa/article/view/781. Acesso em: 11 may. 2024.