الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d371f7fcffc6c09b7747e2103b3c408Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1179768e0116f9c1df3161b62daa4773Test