J. A. . Jiménez Toledo, J. A. . Hurtado, C. A. . Collazos, and L. . Pantoja Yépez, “Collaborative learning with augmented reality techniques as a teaching strategy for teaching iterative structures in computer programming fundamentals”, I+T+C Unicomfacauca, vol. 1, no. 8, pp. 15–22, Dec. 2014.