2011: “On demobilization, disarmament and reintegration within the framework of the law of justice and peace in Colombia”, in Seminar series Current issues of Latin American, Iberian and international criminal law, Göttingen, September 2, 2011.

2006: Notes on the criminal political framework in the guarantee control function”, in First Congress and Seventh National Meeting of Students of Political Science and Related Careers, Santiago de Cali, Pontificia Universidad Javeriana, October 18, 19 and 20, 2006.