• https://repositorio.upch.edu.pe/items/adc3f28f-32d4-48e5-a702-e9483bca8da2
• https://repositorio.upch.edu.pe/items/e0c20b4d-05e2-47c7-a0b5-3a1d505e1d3f
• https://repositorio.upch.edu.pe/items/51026862-f686-46bb-ad90-60ab05e56c69
• https://repositorio.upch.edu.pe/items/d84b66ce-2db7-489d-84b4-f6700221c057
• https://repositorio.upch.edu.pe/items/680401e6-64e4-4ae0-a25f-23927a5f94f0
• https://repositorio.upch.edu.pe/items/55ff1689-4d98-4c05-82df-653869cd7c1e