@article{ZVMMF_1997_37_2_a4,
     author = {M. I. Sumin},
     title = {Suboptimal control of distributed parameter systems: {Normality} properties and dual subgradient method},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {162--178},
     publisher = {mathdoc},
     volume = {37},
     number = {2},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1997_37_2_a4/}
}