• https://repositorio.upn.edu.pe/items/254087c3-9740-4285-b29d-f69b0d804bd7
• https://repositorio.upn.edu.pe/items/53c1b57f-5340-4d21-9438-dd85d42e8829
• https://repositorio.upn.edu.pe/items/46d50b48-8998-4cfa-b77a-a724ba4cf48c
• https://repositorio.upn.edu.pe/items/ea39b201-9963-4fcd-af5e-0197533adc7a
• https://repositorio.upn.edu.pe/items/0a01a2e6-0bcf-425b-bda5-535e623426f4
• https://repositorio.upn.edu.pe/items/ee222334-fd45-4b8b-ba12-6412bae861c4
• https://repositorio.upn.edu.pe/items/7cf5a27e-a18f-4a09-92b9-7f54f0655672
• https://repositorio.upn.edu.pe/items/2ac79496-aa18-425c-ad3f-f4c0790d3653
• https://repositorio.upn.edu.pe/items/57070043-c699-4020-8df6-4142902e7004
• https://repositorio.upn.edu.pe/items/885b055b-671f-40d8-a71d-5f18fd1ab199
• https://repositorio.upn.edu.pe/items/6d03b85e-6496-4d3c-b296-a476e530aefd