PÉREZ-RODRÍGUEZ, Roberto; CAEIRO-RODRIGUEZ, Manuel; ANIDO-RIFON, Luis. Design of a Flexible and Adaptable LMS Engine in Conformance with PoEML. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 4, n. s1, p. pp. 12–17, 2009. DOI: 10.3991/ijet.v4is1.799. Disponível em: https://online-journals.org/index.php/i-jet/article/view/799. Acesso em: 27 apr. 2026.