Bakhmutov, V. G., M. Teiser-Elenskaya, M. Kadzyalko-Hofmokl, L. Konstantinenko, and E. B. Polyachenko. “Paleomagnetic Studies of the Lower Devonian Gray Deposits of Podolia”. Geofizicheskiy Zhurnal, vol. 34, no. 6, Dec. 2012, pp. 57-67, doi:10.24028/gzh.0203-3100.v34i6.2012.116703.