@article{KYB_1975_11_6_a4,
     author = {Dole\v{z}al, Jaroslav},
     title = {Necessary optimality conditions for discrete systems with state-dependent control region},
     journal = {Kybernetika},
     pages = {423--450},
     year = {1975},
     volume = {11},
     number = {6},
     mrnumber = {0401278},
     zbl = {0321.49014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1975_11_6_a4/}
}