الوصول الحر: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2446-47402016000300301Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e11f704a9eb51743c752b6674f316258Testhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2446-47402016000300301Test