الإتاحة: http://www.teses.usp.br/teses/disponiveis/8/8146/tde-02052011-163432Test/
الإتاحة: https://doi.org/10.7769/gesec.v1i1.8Testhttps://revistagesec.org.br/ojs/index.php/secretariado/article/view/8Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::a09ae322e03408170098f35eeb400591Testhttps://www.revistagesec.org.br/secretariado/article/view/8Test