https://repositorio.ucss.edu.pe/handle/20.500.14095/1958
https://repositorio.ucss.edu.pe/handle/20.500.14095/1959
https://repositorio.ucss.edu.pe/handle/20.500.14095/1961
https://repositorio.ucss.edu.pe/handle/20.500.14095/1962
https://repositorio.ucss.edu.pe/handle/20.500.14095/1963
https://repositorio.ucss.edu.pe/handle/20.500.14095/1966
https://repositorio.ucss.edu.pe/handle/20.500.14095/1968
https://repositorio.ucss.edu.pe/handle/20.500.14095/1969
https://repositorio.ucss.edu.pe/handle/20.500.14095/1970
https://repositorio.ucss.edu.pe/handle/20.500.14095/1971
https://repositorio.ucss.edu.pe/handle/20.500.14095/1972
https://repositorio.ucss.edu.pe/handle/20.500.14095/1973
https://repositorio.ucss.edu.pe/handle/20.500.14095/1974
https://repositorio.ucss.edu.pe/handle/20.500.14095/1975