@article{TM_1999_224_a10,
     author = {F. Clarke and Yu. S. Ledyaev and A. I. Subbotin},
     title = {Universal {Feedback} {Control} via {Proximal} {Aiming} in {Problems} of {Control} under {Disturbance} and {Differential} {Games}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {165--186},
     year = {1999},
     volume = {224},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_1999_224_a10/}
}