Аннотация:Barkin Yu.V., Ferrandiz J.M. (2005) Mercury: Rotation, Gravitational field, its variations. CELMEC IV. San Marino al Cimino (Viterbo, Italy) 11-16 September 2005. Abstracts.
http://www.mat.uniroma2.it/celmec/celmec4/abstracts4.html
http://www.mat.uniroma2.it/celmec/abstracts5/Yury_Barkin.pdf.