الوصول الحر: https://doaj.org/article/553b94dddb88430aada8cc10eb3bb279Test
الوصول الحر: https://doaj.org/article/81e3640025674984b1d71c3878ccc8f4Test
الوصول الحر: https://doaj.org/article/b4f3d045fa0842ce890be9a5c0ca20a4Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1069ef7ce2489d8d0c55532cf269495Testhttp://europepmc.org/articles/PMC8493096Test