ALI, Muhammad Usman; POSTOLACHE, Mihai; ALTUN, Ishak; KAMRAN, Tayyab. Preface. Communications in Mathematics and Applications, [S. l.], v. 9, n. 1, p. i - v, 2018. DOI: 10.26713/cma.v9i1.928. Disponível em: https://www.rgnpublications.com/journals/index.php/cma/article/view/928. Acesso em: 13 may. 2026.