@article{DA_1979_18_a3,
     author = {A. G. Orlov and I. V. Rasina},
     title = {Complex processes and sufficient conditions of relative optimality},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {39--46},
     year = {1979},
     number = {18},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1979_18_a3/}
}