TY - JOUR AU - A. O. Bagapsh AU - K. Yu. Fedorovskiy TI - $C^1$ Approximation of Functions by Solutions of Second-Order Elliptic Systems on Compact Sets in $\mathbb R^2$ JO - Informatics and Automation PY - 2017 SP - 42 EP - 57 VL - 298 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_2017_298_a2/ LA - ru ID - TRSPY_2017_298_a2 ER -