%0 Journal Article %A F. V. Lubyshev %A A. R. Manapova %T An approximation of problems of optimal control on the coefficients of elliptic convection-diffusion equations with an imperfect contact matching condition %J Žurnal Srednevolžskogo matematičeskogo obŝestva %D 2019 %P 187-214 %V 21 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/SVMO_2019_21_2_a3/ %G ru %F SVMO_2019_21_2_a3