الوصول الحر: https://doaj.org/article/d59dcd5b764d4511be1e5ecf5f6c5c39Test
الوصول الحر: https://doaj.org/article/7ed4d69b8b624e1d96e74bb8a3f33b53Test
الوصول الحر: https://doaj.org/article/f6857a99962c4a64861e8adf3f6ed6e3Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c3f065d5f1c7b2485bd8bc9c4f6a1a51Testhttp://link.springer.com/article/10.1038/s41598-018-26273-zTest