ABOUT THE STABILITY OF THE LIBRATION POINTS OF A ROTATING TRIAXIAL ELLIPSOID IN A DEGENERATE CASE ArticleZhuravlev S.G.Celestial Mechanics. Vol. 8. 1973. P.. 75-84
STABILITY OF THE LIBRATION POINTS OF A ROTATING TRIAXIAL ELLIPSOID ArticleZhuravlev S.G.Celestial Mechanics. Vol. 6. 1972. P.. 255-267