https://repositorio.uss.edu.pe/handle/20.500.12802/13757
https://repositorio.uss.edu.pe/handle/20.500.12802/13758
https://repositorio.uss.edu.pe/handle/20.500.12802/13760
https://repositorio.uss.edu.pe/handle/20.500.12802/13710
https://repositorio.uss.edu.pe/handle/20.500.12802/13721
https://repositorio.uss.edu.pe/handle/20.500.12802/13722
https://repositorio.uss.edu.pe/handle/20.500.12802/13728
https://repositorio.uss.edu.pe/handle/20.500.12802/13734
https://repositorio.uss.edu.pe/handle/20.500.12802/13708
https://repositorio.uss.edu.pe/handle/20.500.12802/13716
https://repositorio.uss.edu.pe/handle/20.500.12802/13727