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IEEE Revista Iberoamericana de Tecnologias del Aprendizaje > 2014 > 9 > 4 > 144 - 150
IEEE Potentials > 2014 > 33 > 3 > 17 - 22
IEEE Transactions on Education > 2014 > 57 > 4 > 248 - 254
IEEE Transactions on Education > 2014 > 57 > 4 > 242 - 247
IEEE Transactions on Instrumentation and Measurement > 2014 > 63 > 5 > 1272 - 1280