TY - JOUR AU - J. L. Simovljevitch TI - Further Note on the Calculus of Perturbations of Asteroid Orbits During Proximity JO - Publications of the Department of Astronomy PY - 1979 SP - 71 EP - 74 VL - 9 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/PDA_1979_9_1_a7/ ID - PDA_1979_9_1_a7 ER -