الإتاحة: https://doi.org/20.500.12501/2531Testhttps://doi.org/10.18678/dtfd.1144552Testhttps://hdl.handle.net/20.500.12501/2531Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fc44a708a45ca762058c088aaa796e9Testhttps://hdl.handle.net/20.500.12501/2531Test