Fridman, A.M. Physics of gravitating systems A.M. Fridman and V.L. Polyachenko; translated by A.B. Aries and Igor N. Poliakoff - Berlin Springer-Verlag c1984 - v.; 23cm. contents: v.1: Equilibrium & stability v.2: Nonlinear collective prose Dewey Class. No.: 523.01 / FRI