Petrophysical parameters of rocks of the Visean stage (Lokhvytsky zone of the Dnieper-Donets Depression) - S. A. Vyzhva; V. I. Onyshchuk; I. I. Onyshchuk; M. I. Orliuk; V. V. Drukarenko; M. V. Reva; O. V. Shabatura (Geophysical journal, 2019)