Shahinyan, S. and Kirakosyan, G. (2011) “ON THE OPTIMAL STABILIZATION OF A DOUBLE MATHEMATICAL PENDULUM HAVING A MOVABLE SUSPENSION CENTER”, Proceedings of the YSU A: Physical and Mathematical Sciences. Yerevan, Armenia, 45(3 (226), pp. 31–39. doi: 10.46991/PYSU:A/2011.45.3.031.