@article{IIMI_2012_39_1_a61,
     author = {V. I. Sumin},
     title = {Singular optimal controls in the distributed problems and {Volterra} functional-operator equations},
     journal = {Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta},
     pages = {128--129},
     publisher = {mathdoc},
     volume = {39},
     number = {1},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2012_39_1_a61/}
}