Prodayvoda, G.T., P. Kuzmenko, and A. Vyzhva. “Numerical Calculations of Elastic Constants of Sedimentary Strata in Triclinic Approximation Based on Vertical Seismic Profiling Data”. Geofizicheskiy Zhurnal 37, no. 3 (June 1, 2015): 102–123. Accessed May 23, 2022. http://journals.uran.ua/geofizicheskiy/article/view/111105.