@article{ZVMMF_1989_29_9_a17,
     author = {F. V. Lubyshev},
     title = {The accuracy of difference approximations and the regularization of optimal control problems for an elliptic equation with controls in the coefficients},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {1431--1433},
     publisher = {mathdoc},
     volume = {29},
     number = {9},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1989_29_9_a17/}
}