TY JOUR TI Approximation approach to the solution of gravity and magnetic problems. 1. The regularization of the systems of linear algebraic equations as the main computation problem KW gravity and magnetic problems KW approximation approach KW regularization of algebraic equations. JO Russian Journal of Earth Sciences AU Strakhov, V.N. AU Strakhov, A.V. PY 1999 IS 1 PB Geophysical Center of the Russian Academy of Sciences