Barra, E. , Carril, A. , Gordillo, A. , Salvachúa, J. , Quemada, J. (2014). 'Design, Development and Evaluation of a Portable Recording System to Capture Dynamic Presentations Using the Teacher´s Tablet PC'. World Academy of Science, Engineering and Technology, Open Science Index 87, International Journal of Educational and Pedagogical Sciences, 8(3), 747 - 751.