• https://repositorio.unsm.edu.pe/item/a90301a0-0708-47dc-8051-34b4cf47ad01
• https://repositorio.unsm.edu.pe/item/d0edbc0a-4ec8-402c-91d7-1c4c1220ca08
• https://repositorio.unsm.edu.pe/item/eb73b924-a31d-4830-854c-0b98daea8b1a
• https://repositorio.unsm.edu.pe/item/5442da7f-eff4-483c-8268-282a680433f9
• https://repositorio.unsm.edu.pe/item/35cdcb08-bc6e-472a-b3e4-2bfe158ba4ed
• https://repositorio.unsm.edu.pe/item/8fb3d2de-de3c-40e3-8d83-72cf18d796c5
• https://repositorio.unsm.edu.pe/item/fda6bb50-5d8f-42d0-9c75-2f67f713b72a