1. V. N. Strakhov, I. A. Kerimov, and I. E. Stepanova, The Way to Develop the Theory and Computer Technologies for Creating Linear Analytical Approximations for Gravitation and Magnetic Fields (Schmidt Inst. Phys. Earth Russ. Acad. Sci., Moscow, 2009) [in Russian].
2. D. Zidarov, The Way to Solve Some Inverse Problems of Potential Fields and Their Application to Geophysical Problems (Bulgarian Acad. Sci., Sofiya, 1968 [in Russian].
3. I. E. Stepanova, I. A. Kerimov, D. N. Raevskiy, and A. V. Shchepetilov, Izv., Phys. Solid Earth 54 (1), 91–106 (2018).
4. Yu. V. Glasko, Izv., Phys. Solid Earth 48 (2), 174 (2012).
5. D. Kim, W. B. Banerdt, S. Ceylan, et al., Science 378 (6618), 417–421 (2022).