Gómez, S. A., C. I. Chesñevar, and G. R. Simari. “A Defeasible Logic Programming Approach to the Integration of Rules and Ontologies”. Journal of Computer Science and Technology, vol. 10, no. 02, June 2010, pp. p. 74-80, https://journal.info.unlp.edu.ar/JCST/article/view/730.