TY - JOUR AU - F. V. Lubyshev AU - A. R. Manapova TI - An approximation of problems of optimal control on the coefficients of elliptic convection-diffusion equations with an imperfect contact matching condition JO - Žurnal Srednevolžskogo matematičeskogo obŝestva PY - 2019 SP - 187 EP - 214 VL - 21 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SVMO_2019_21_2_a3/ LA - ru ID - SVMO_2019_21_2_a3 ER -