HARUNA, I. Challenges of Electronic Payment Systems in Ghana: The Case of e-ZWICH. American Journal of Business and Management, [S. l.], v. 1, n. 3, p. 87–95, 2012. DOI: 10.11634/216796061706131. Disponível em: http://worldscholars.org/index.php/ajbm/article/view/13. Acesso em: 3 may. 2024.