Dubovenko, Yu. I., and O. A. Chernaya. “On the Choice of the Zeroth Approximation in the Determination of a Complex Contact”. Geofizicheskiy Zhurnal 35, no. 1 (February 1, 2013): 159–178. Accessed April 26, 2024. https://journals.uran.ua/geofizicheskiy/article/view/116349.