О6
A23	Aerospace century XXI: space sciences, applications, and commercial developments. Vol.64. P.III. Advances in the Astronautical sciences [Текст] : Proceedings of the 33rd Annual AAS Int. Conf. held October 26-29, 1986, at Boulder, Colorado / Ed. by G.W.Morgenthaler, J.N.Koster. — San Diego : AAS, 1987. — 700с.