1. Der selbsterregte unsymmetrische Kreisel
2. The General Problem of the Motion of Coupled Rigid Bodies about a Fixed Point
3. Armstrong, U.S. "Errors Associated With Spinning-Up and Thrusting Symmetric Rigid Bodies," Technical Report No. 32-644, Jet PropulsionLaboratory,California Institute of Technology, Pasadena, California,February15,1965.
4. Kurzhals, P.R. "An Approximate Solution of the Equations of Motion for Arbitrary Rotating Spacecraft," NASA Technical Report TR R-269, Langley Research Center, Hampton, Virginia, 1967.
5. Solution of Kinematical Differential Equations for a Rigid Body