@article{DAN_1995_344_5_a4,
     author = {E. G. Savateev},
     title = {On the problem of determining the source function and the},
     journal = {Doklady Akademii Nauk},
     pages = {597--598},
     year = {1995},
     volume = {344},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1995_344_5_a4/}
}