@article{RM_1990_45_4_a5,
     author = {I. D. Cherkasov},
     title = {Optimal control by searching a~two-dimensional diffusion process of special type},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {160--162},
     publisher = {mathdoc},
     volume = {45},
     number = {4},
     year = {1990},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1990_45_4_a5/}
}