Celestial Mechanics and Dynamical AstronomyAn International Journal of Space DynamicsDvorak, RudolfHenrard, JacquesAuthor information1Unversity of Vienna, Austria2University of Namur (FUNDP), BelgiumCelestial Mechanics and Dynamical Astronomy 78(4):p 1-6, September 2000.Copyright ©2000 Kluwer Academic Publishers