G. E. Betancur Jiménez, “Laxity and compulsority: a paradox”, Rev. DyC. EAFIT, vol. 43, no. 146, pp. 47–58, May 2012, Accessed: Nov. 11, 2026. Available: https://publicaciones.eafit.edu.co/index.php/revista-universidad-eafit/article/view/772