الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b10183ea3772ce867f865d28d13b452Testhttps://europepmc.org/articles/PMC3096523Test/
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::6535206208bc4b3a74eedfa8680371f5Testhttps://doi.org/10.1385/1-59259-939-7:151Test