Gulyaev, V. I. Complex motion of elastic systems. (Russian, English) Zbl 1130.70310 Prikl. Mekh., Kiev 39, No. 5, 28-51 (2003); translation in Int. Appl. Mech. 39, No. 5, 525-545 (2003). MSC: 70E55 70E60 70K30 PDFBibTeX XMLCite \textit{V. I. Gulyaev}, Prikl. Mekh., Kiev 39, No. 5, 28--51 (2003; Zbl 1130.70310); translation in Int. Appl. Mech. 39, No. 5, 525--545 (2003)
Grobov, V. A.; Kantemir, I. I. The stability of nutations of a free system of coaxial rotors. (Russian) Zbl 0448.70021 Mat. Fiz. 25, 24-30 (1979). MSC: 70J25 70E99 74F10 PDFBibTeX XMLCite \textit{V. A. Grobov} and \textit{I. I. Kantemir}, Mat. Fiz. 25, 24--30 (1979; Zbl 0448.70021)