• https://repositorio.uleam.edu.ec/handle/123456789/7921
• https://repositorio.uleam.edu.ec/handle/123456789/7922
• https://repositorio.uleam.edu.ec/handle/123456789/7923
• https://repositorio.uleam.edu.ec/handle/123456789/7924
• https://repositorio.uleam.edu.ec/handle/123456789/7925
• https://repositorio.uleam.edu.ec/handle/123456789/7926
• https://repositorio.uleam.edu.ec/handle/123456789/7927
• https://repositorio.uleam.edu.ec/handle/123456789/7928
• https://repositorio.uleam.edu.ec/handle/123456789/7929
• https://repositorio.uleam.edu.ec/handle/123456789/7930