TY - JOUR AU - V. G. Getmanov TI - Local and spline approximations in digital processing of geomagnetic observations JO - Čebyševskij sbornik PY - 2018 SP - 26 EP - 42 VL - 19 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CHEB_2018_19_4_a2/ LA - ru ID - CHEB_2018_19_4_a2 ER -