@article{DAN_1994_337_1_a5,
     author = {Yu. E. Anikonov},
     title = {Formulas in inverse problems for differential equations and},
     journal = {Doklady Akademii Nauk},
     pages = {23--24},
     publisher = {mathdoc},
     volume = {337},
     number = {1},
     year = {1994},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1994_337_1_a5/}
}