1. L. Euler, Recherches sur le mouvement des corps célestes en général, Mém. Acad. Sci. Berlin 1747 (1749) S. 93?143.
2. L. Euler, Découverte d'un nouveau principe de mécanique, Mém. Acad. Sci. Berlin 6 (1750) S. 185?217, 1752.
3. R. E. Roberson, Attutide control of satellites and space vehicles, in Advances in Space Science, Vol. 2 New York 1960, p. 351.
4. M. J. Abzug, Active satellite attitude control, in Guidance and Control of Aerospace Vehicles, ed. by C. T. Leondes, New York 1963, p. 331; also: Attitude control of multiple-part satellites, Ph.D. dissertation, Univ. of California at Los Angeles, 1962.
5. C. Grubin, J. Appl. Mech. 29 (1962) p. 486.