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الإتاحة: https://doi.org/20.500.12123/3664Testhttps://doi.org/10.1016/j.tube.2018.06.007Testhttps://hdl.handle.net/20.500.12123/3664Testhttps://www.sciencedirect.com/science/article/pii/S1472979217304924?via%3DihubTest
الإتاحة: https://doi.org/10.1016/j.tube.2018.06.007Testhttp://hdl.handle.net/11336/97548Test