• https://repositorio.uancv.edu.pe/items/06ddba21-5972-4fff-8e39-2b426d06711e
• https://repositorio.uancv.edu.pe/items/239ecb66-808e-4f34-8c30-fded6ef0fe30
• https://repositorio.uancv.edu.pe/items/5bcdfb0d-a7c2-492a-ae50-1edd62b80577
• https://repositorio.uancv.edu.pe/items/54d313cc-efef-47c8-93f2-d77fef9deca6
• https://repositorio.uancv.edu.pe/items/1179eff0-1d62-4da4-91ba-541406462378