KAUSHIK, S. K.; ZALIK, R. A. Preface. Communications in Mathematics and Applications, [S. l.], v. 3, n. 3, p. iii, 2012. DOI: 10.26713/cma.v3i3.204. Disponível em: https://www.rgnpublications.com/journals/index.php/cma/article/view/204. Acesso em: 29 apr. 2024.