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article
by Gamarra Torres, Oscar Andrés; Montoya Terreros, Haydee; Eneque Puicón, Armando; Ñique Álvarez, Manuel; Chuquilín Bustamante, Edilberto; Barrena Gurbillón, Miguel Ángel
Published in 2013
Repository Repositorio Universidad Politécnica Salesiana