"Observations of crustal tide strains in the Elbrus area". Izvestiya Physics of the Solid Earth (MAIK Nauka) 43 (11): 922–930. November 2007. doi:10.1134/S106935130711002X. Bibcode: 2007IzPSE..43..922M.
"Observations of crustal tide strains in the Elbrus area". Izvestiya Physics of the Solid Earth (MAIK Nauka) 43 (11): 922–930. November 2007. doi:10.1134/S106935130711002X. Bibcode: 2007IzPSE..43..922M.