الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1817f9b86c112a7b07fcfb673ab41065Testhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000900738Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b03d6b4710efe878f8eb633e497ce27eTesthttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000600016Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0dc39ad05dbdfc9bab73e4fabbf1a68Testhttp://repositorio.unifesp.br/handle/11600/3590Test