Mendoza Ceballos, J. ., A. M. . Chito Jiménez, and C. L. . Larrahondo Caicedo. “Using Computational Tools in Collaborative Environments As a Basis for the Development of a Ubiquitous Model of Computer Assisted Learning”. I+ T+ C- Research, Technology and Science, vol. 1, no. 8, Dec. 2014, pp. 33-41, https://revistas.unicomfacauca.edu.co/ojs/index.php/itc/article/view/itc2014_pag_33_41.