Slivinsky, A. P., N. A. Kalyuzhny, and F. I. Bushuyev. “Possibility of Studying Geophysical Oscillatory Processes and Perturbations According to the Astronomical Hours of Fedchenko”. Geofizicheskiy Zhurnal, vol. 33, no. 1, Feb. 2011, pp. 28-38, doi:10.24028/gzh.0203-3100.v33i1.2011.117322.