"Israel Barrutia Barreto" <israel20barrutia@gmail.com>, "Samuel Acevedo Torres" <samuelacevedo@hotmail.com>, "Sabino Villón Bruno" <evillon1024@hotmail.com>, "Santos  Guanilo Gómez" <sguanilo20@gmail.com>, "Lessner  León Espinoza" <leonespinozalessner@gmail.com>