الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9ee3cf7210d33f5a40624183c7c828d0Testhttps://doi.org/10.2807/1560-7917.es.2020.25.31.2001369Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ca68d373eacad5014ea60a0511adec7Testhttps://doi.org/10.2807/1560-7917.es.2019.24.33.1800538Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f82db4314951c8bb387dd3a91bef87ebTesthttps://doi.org/10.2807/1560-7917.es.2016.21.25.30265Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b8f73abe31d4e46b166ddafff28b8405Testhttps://europepmc.org/articles/PMC9150517Test/
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ea888f26727c8708df778d476f4931a2Testhttps://hdl.handle.net/10400.18/555Test