@article{DAN_1991_319_5_a7,
     author = {N. S. Nadirashvili},
     title = {Universal classes of uniqueness of domains in an inverse problem},
     journal = {Doklady Akademii Nauk},
     pages = {1072--1075},
     publisher = {mathdoc},
     volume = {319},
     number = {5},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_319_5_a7/}
}