1. http://youtu.be/60iBwQwAnqo?t=1m30s
2. www.federalspace.ru/main.php?id=2nid=19068
3. Numerical Simulation of Motion, http://bit.ly/15xfQVu
4. V. F. Zhuravlev, Fundamentals of Theoretical Mechanics (Moscow, Fizmatlit, 1997) [in Russian].
5. P. Appel, Theoretical Mechanics (Moscow, Fizmalit, 1960), Vol. 2 [in Russian].