الوصول الحر: https://doaj.org/article/d0327989d50e4d459bb28bcff3e21e55Test
الوصول الحر: https://doaj.org/article/5130d1f6e9b24c6cb5315ddb66230946Test
الإتاحة: https://doi.org/10.60692/q2mf2-wqa5110.60692/tmety-44b20Test
الإتاحة: https://doi.org/10.18682/cdc.vi159.6829Testhttps://doi.org/10.18682/cdc.vi159Testhttps://dspace.palermo.edu/ojs/index.php/cdc/article/view/6829Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=multidiscipl::a08df507e0d43921daf5b88b3f3da406Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::ba00fb2de5ee9b0f65f2d7ed27ee1e5dTesthttps://doi.org/10.18682/cdc.vi159.6829Test