@article{ZNSL_1997_239_a17,
     author = {A. S. Starkov},
     title = {On recovering of the density in the plane domain from incomplete spectral data},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {218--224},
     publisher = {mathdoc},
     volume = {239},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_239_a17/}
}