الوصول الحر: https://doaj.org/article/814d80a48fd742f7876bbc4687dc14a9Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d6e76e5db894307ac4bf2decac312c9Testhttps://doi.org/10.1186/s12870-017-1200-6Test