@article{VNGU_2016_16_3_a2,
     author = {A. I. Kozhanov and Yu. A. Kosheleva},
     title = {Linear inverse problems for ultraparabolic equations: the case of an unknown coefficient of space type},
     journal = {Sibirskij \v{z}urnal \v{c}istoj i prikladnoj matematiki},
     pages = {27--39},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VNGU_2016_16_3_a2/}
}