http://repositorio.uide.edu.ec/handle/37000/3057
http://repositorio.uide.edu.ec/handle/37000/3080
http://repositorio.uide.edu.ec/handle/37000/3067
http://repositorio.uide.edu.ec/handle/37000/3030
http://repositorio.uide.edu.ec/handle/37000/3068
http://repositorio.uide.edu.ec/handle/37000/3082
http://repositorio.uide.edu.ec/handle/37000/3041
http://repositorio.uide.edu.ec/handle/37000/3069
http://repositorio.uide.edu.ec/handle/37000/3083
http://repositorio.uide.edu.ec/handle/37000/3052
http://repositorio.uide.edu.ec/handle/37000/3071
http://repositorio.uide.edu.ec/handle/37000/3059
http://repositorio.uide.edu.ec/handle/37000/3073
http://repositorio.uide.edu.ec/handle/37000/3076
http://repositorio.uide.edu.ec/handle/37000/3065