Silva, Cristian Vidal, Rodrigo Saens, Carolina Del Río, and Rodolfo Villarroel. 2013. “Aspect-Oriented Modeling: Applying Aspect-Oriented UML Use Cases and Extending Aspect-Z”. Computing and Informatics 32 (3):573-93. http://147.213.75.17/ojs/index.php/cai/article/view/1734.