MOTA, Flávio Perazzo Barbosa; FILHO, José Rodrigues. Public E-Procurement and the Duality of Technology: A Comparative Study in the Context of Brazil and of the State of Paraíba. Journal of Information Systems and Technology Management, [S. l.], v. 8, n. 2, p. 315–330, 2011. DOI: 10.4301/s1807-17752011000200003. Disponível em: https://jistem.tecsi.org/index.php/jistem/article/view/10.4301%252FS1807-17752011000200003. Acesso em: 15 aug. 2025.