الوصول الحر: https://doaj.org/article/dda2c14f9a0e4f93aec57faf67430351Test
الوصول الحر: https://doaj.org/article/b96589ec9a694c9880c8d88e7f70f8a6Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9189b98c87589cb9eef74d70a0fedb6Testhttps://www.mdpi.com/2076-3921/10/11/1645Test