الوصول الحر: https://doaj.org/article/eb92fe9b2bd9400eadf9271250d637b1Test
الوصول الحر: https://doaj.org/article/7784018b952047eda94e59daec0ece2bTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2246590763bf2fd80f0ec4db78bedfadTesthttps://www.frontiersin.org/article/10.3389/fchem.2020.00513/fullTest