TY - JOUR ID - TI - natural frequencies and parametric instability of tapered curved beams subjected to periodical load and elastic end support AU - Ahmed A. AL- Rajihy PY - 2006 VL - 12 IS - 5 SP - 970 EP - 981 JO - Journal of University of Babylon مجلة جامعة بابل SN - 19920652 23128135 AB -

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