@article{RM_1988_43_5_a17,
     author = {Yu. D. Golovatyj and S. A. Nazarov and O. A. Oleinik},
     title = {The asymptotic behaviour of~eigenvalues and eigenfunctions in~problems on vibrations of a~medium with singular perturbation of the density},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {229--230},
     publisher = {mathdoc},
     volume = {43},
     number = {5},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1988_43_5_a17/}
}