@article{DAN_1985_285_2_a17,
     author = {Yu. K. Sirenko and V. P. Shestopalov},
     title = {Uniqueness of solutions of spectral problems for},
     journal = {Doklady Akademii Nauk},
     pages = {335--338},
     publisher = {mathdoc},
     volume = {285},
     number = {2},
     year = {1985},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1985_285_2_a17/}
}