الوصول الحر: https://doaj.org/article/edba22d1e31048fabb157aa337945265Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09520971efae05dc20499a169fae2b4fTesthttp://www.scielo.br/pdf/abmvz/v72n4/0102-0935-abmvz-72-04-1545.pdfTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65bdec871817cfb9e4caf14ef18ef8caTesthttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000300013&lng=en&tlng=enTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88f9b1dad05327b04e3f9417b0d07112Testhttp://www.scielo.br/pdf/abmvz/v73n1/0102-0935-abmvz-73-01-11.pdfTest