الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od______3056::efc4cd4ff4705c3e2647c801563a8e6eTest
الإتاحة: https://doi.org/20.500.12110/tesis_n4688_LopezTesthttps://hdl.handle.net/20.500.12110/tesis_n4688_LopezTesthttp://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=aextesis&d=tesis_n4688_Lopez_oaiTest