Geodesic
On the dynamic stability of a compound beam
Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (1991), pp. 64-68.

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The stability of a compound beam is investigated when in the joint point of the material some periodic or impulsive forces are applied. The unstability regions and the critical time of the losing stability are defined. 
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L. A. Movsessian. On the dynamic stability of a compound beam. Proceedings of the Yerevan State University. Physical and mathematical sciences, no. 2 (1991), pp. 64-68. http://geodesic.mathdoc.fr/item/UZERU_1991_2_a7/

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