• https://repositorio.unsaac.edu.pe/items/88dc5852-caf2-44eb-90fe-f24d32bbf4f9
• https://repositorio.unsaac.edu.pe/items/8c748fd0-da4b-4a53-a06c-807a372f6843
• https://repositorio.unsaac.edu.pe/items/3e7d0352-f115-47ef-a09e-29f7a2381da3
• https://repositorio.unsaac.edu.pe/items/2dd2f8de-1056-48bb-9398-202d56f9f8c4
• https://repositorio.unsaac.edu.pe/items/9b74110e-07d3-4092-a815-015dd0fb9360
• https://repositorio.unsaac.edu.pe/items/8c2edbab-65ad-4789-b6b4-ec73cb5d2968