@article{DAN_1976_229_4_a0,
     author = {A. L. Bukhgeim and V. G. Yakhno},
     title = {On two inverse problems for differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {785--786},
     publisher = {mathdoc},
     volume = {229},
     number = {4},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_229_4_a0/}
}