الوصول الحر: https://doaj.org/article/9ca642deaee14502b9c9e7fdf6f5ca77Test
الوصول الحر: https://doaj.org/article/e511152728c54ceb868b6aafe19d408fTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a522fd959bc6155b646217cbb1ba5336Testhttps://hdl.handle.net/10486/672811Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8eff9e51314a10391258608b3475c3fbTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a8012fe0277290eb97fcd46989791e0Testhttp://europepmc.org/articles/PMC5684603Test