الإتاحة: http://hdl.handle.net/11379/162357Test
الإتاحة: http://hdl.handle.net/11380/853343Test
الإتاحة: https://doi.org/10.1016/s0924-8579Test(09)70044-5https://api.elsevier.com/content/article/PII:S0924857909700445?httpAccept=text/xmlTesthttps://api.elsevier.com/content/article/PII:S0924857909700445?httpAccept=text/plainTest
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od______3662::d883d6b805b41125e2d881c03416c9c9Testhttp://hdl.handle.net/11379/162357Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od______3686::aa1a6daecc9ab18edb1bcae313a86762Testhttp://hdl.handle.net/11573/108425Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=od______3674::ce8ed17159fd7ca6b3c3e72cae69797fTesthttps://hdl.handle.net/11380/853343Test