الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::6e685be9aa476c1ef96f8d973fe6d1efTesthttps://doi.org/10.1016/0304-4165Test(74)90292-x
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7e4580429b9c7f5739ba331fbabab49aTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bec46e3ba24731173853b7e3f3d433d7Testhttps://pubmed.ncbi.nlm.nih.gov/4396768Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0dc734f20c72c3b02c6c4c65913a2f41Testhttps://pubmed.ncbi.nlm.nih.gov/5044053Test