MR. VEDPRAKASH HIRWANI, M. S. M. P. P. B. Hierarchical Messaging Application for Android Using Salesforce. International Journal of Engineering and Computer Science, india, v. 6, n. 4, 2017. Disponível em: http://www.ijecs.in/index.php/ijecs/article/view/3684. Acesso em: 20 may. 2024.