• https://repositorio.ister.edu.ec//handle/68000/436
• https://repositorio.ister.edu.ec//handle/68000/659
• https://repositorio.ister.edu.ec//handle/68000/218
• https://repositorio.ister.edu.ec//handle/68000/870
• https://repositorio.ister.edu.ec//handle/68000/933
• https://repositorio.ister.edu.ec//handle/68000/296
• https://repositorio.ister.edu.ec//handle/68000/633
• https://repositorio.ister.edu.ec//handle/68000/557
• https://repositorio.ister.edu.ec//handle/68000/791