Dynamics of stellar systems proceedings of the IAU symposium no. 69,held in Besancon, France, September 9-13,1974 - International Astronomical Union Symposium Besancon, France 1974 Sept. 9-13; Hayli, Avram, ed.; International Astronomical Union (Dordrecht D. Reidel Publishing, 1975)
Keywords: 9; 9; 9; 9