@article{TM_1984_166_a9,
     author = {G. I. Marchuk},
     title = {The environment and optimization problems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {123--129},
     publisher = {mathdoc},
     volume = {166},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1984_166_a9/}
}