الوصول الحر: https://doaj.org/article/ba05cd61a8eb493f9177025402593bbbTest
الوصول الحر: https://doaj.org/article/3ade1adb09f84fae9aadd7263c2a28e3Test
الوصول الحر: https://doaj.org/article/bff7fbd22f694d0b9b9ad46febd0f7faTest
الوصول الحر: https://doaj.org/article/f332b578adc04a0ba182a5e17fb0b383Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e209adfbcbdb0b683f92207eb4876bb1Testhttp://europepmc.org/articles/PMC7322050Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e33cf342d4f6e5cc552ec7c456b43b70Testhttps://doi.org/10.1016/jTest.heliyon.2020.e05397