@article{DA_1979_18_a1,
     author = {R. Gabasov and F. M. Kirillova},
     title = {On the theory of necessary conditions for optimality in discrete control systems},
     journal = {Diskretnyj analiz i issledovanie operacij},
     pages = {14--25},
     publisher = {mathdoc},
     number = {18},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DA_1979_18_a1/}
}