TY - JOUR AU - E. A. Kudryavtseva TI - Periodic motions of a planetary system with double planets. The generalized Hill problem JO - Vestnik Moskovskogo universiteta. Matematika, mehanika PY - 1999 SP - 59 EP - 61 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMUMM_1999_4_a12/ LA - ru ID - VMUMM_1999_4_a12 ER -