الوصول الحر: https://doaj.org/article/f2267929dbc44b1297b692ce78da5293Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::711f0e437ebe7410b7b89ad03b30f0adTesthttp://www.sciencedirect.com/science/article/pii/S096999610700174XTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::983f86bd0caa9d1fc480020f591decc4Testhttps://pubmed.ncbi.nlm.nih.gov/25940914Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d850937b143884c0deabdc51aa67bfbeTesthttps://doi.org/10.1016/j.nbd.2004.12.009Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::27dc7a73c71bed34f03df447e395057aTesthttps://doi.org/10.1016/s0969-9961Test(03)00043-3