@article{DE_1975_11_2_a14,
     author = {G. A. Suvorchenkova},
     title = {An application of {Sobolev's} method to the study of the connection between the spectrum of a second order elliptic differential operator and the geometry of a manifold without boundary},
     journal = {Differencialʹnye uravneni\^a},
     pages = {358--365},
     publisher = {mathdoc},
     volume = {11},
     number = {2},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1975_11_2_a14/}
}