%0 Journal Article %A V. I. Sumin %T Singular optimal controls in the distributed problems and Volterra functional-operator equations %J Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta %D 2012 %P 128-129 %N 1 %U http://geodesic.mathdoc.fr/item/IIMI_2012_1_a61/ %G ru %F IIMI_2012_1_a61