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4. I. N. Gashenenko, G. V. Gorr, and A. M. Kovalev, Classical Problems in the Dynamics of Rigid Body (Naukova dumka, Kiev, 2012) [in Russian].
5. A. V. Borisov and I. S. Mamaev, Rigid Body Dynamics (Regular and Chaotic Dynamics, Izhevsk, Moscow, 2001) [in Russian].