00506naa#a2200169#i#450# EN\\bibl\46916 20260313084252.5 1681-1208 20091125b2009####ek#y0engy0150####ca RU Studies of the Earth's center of mass periodical movements Journal article Moscow Geophysical Center of the Russian Academy of Sciences 2009 6 с. Journal article local Tatevian S K Kuzin S P ras.editorum.ru