Аннотация:Barkin Yu. (2008) About tidal and non-tidal variations of selenopotential coefficients and possible displacements of center of mass of the Moon // Proceedings of Russian-Japanese Lunar Planetary Conference (Moscow, 29 September 2008; St.Peterburg, 1 October 2008; Kasan, 3 October 2008; Russia). 2008. Vol. 1, RJLPC-3-2008-008. 2p.
http://www.geona.ksu.ru/docs/barkin3.pdf.