@article{DAN_1991_316_4_a6,
     author = {Yu. Ya. Belov and E. G. Savateev},
     title = {An inverse problem for a parabolic equation with an unknown},
     journal = {Doklady Akademii Nauk},
     pages = {800--804},
     publisher = {mathdoc},
     volume = {316},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_316_4_a6/}
}