TY - JOUR AU - B. S. Bardin AU - A. N. Avdyushkin TI - On Stability of the Collinear Libration Point $L_1$ JO - Russian journal of nonlinear dynamics PY - 2022 SP - 543 EP - 562 VL - 18 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ND_2022_18_4_a5/ LA - en ID - ND_2022_18_4_a5 ER -