%0 Journal Article %A V. V. Lukyanov %T Positional control problems for nonstationary systems %J Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta %D 2006 %P 69-72 %N 2 %U http://geodesic.mathdoc.fr/item/IIMI_2006_2_a15/ %G ru %F IIMI_2006_2_a15