@article{IM2_1994_42_2_a2,
     author = {E. N. Makhmudov and B. N. Pshenichnyi},
     title = {The optimality principle for discrete and differential inclusions of parabolic type with distributed parameters, and duality},
     journal = {Izvestiya. Mathematics },
     pages = {299--319},
     publisher = {mathdoc},
     volume = {42},
     number = {2},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1994_42_2_a2/}
}