الوصول الحر: https://doaj.org/article/576efdfc0c114c93934ff90bc9940a42Test
الإتاحة: https://doi.org/10.1186/s12860-021-00354-wTesthttps://digitalcommons.dartmouth.edu/facoa/4192Testhttps://digitalcommons.dartmouth.edu/context/facoa/article/5186/viewcontent/Tiwari.pdfTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7a4c6fc72853eaae1a2bf396bc24f955Testhttps://doaj.org/article/576efdfc0c114c93934ff90bc9940a42Test