الوصول الحر: https://doaj.org/article/85eddab5ccef41568283df8951db47e9Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abf35e77b0fd3621a6f205762f5c7b8dTesthttps://doi.org/10.2340/16501977-2292Test