E. A. Grebenikov D. Kozak-Skoworodkin N. I. Zemtsova Properties of the Liapunov Stability Zones of the Lagrange Triangle. 169-180 2007 conf/casc/2007 CASC http://dx.doi.org/10.1007/978-3-540-75187-8_14 db/conf/casc/casc2007.html#GrebenikovKZ07