TY - JOUR AU - V. M. Grigorevskii TI - Rapid variations of the rotation period of the second Soviet artificial earth satellite with respect to the transverse axis JO - Doklady Akademii Nauk PY - 1961 SP - 572 EP - 575 VL - 137 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1961_137_3_a18/ LA - ru ID - DAN_1961_137_3_a18 ER -