@article{SM_1992_73_1_a2,
     author = {V. A. Kozlov and V. G. Maz'ya},
     title = {On the spectrum of the operator pencil generated by the {Dirichlet} problem in a~cone},
     journal = {Sbornik. Mathematics},
     pages = {27--48},
     publisher = {mathdoc},
     volume = {73},
     number = {1},
     year = {1992},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1992_73_1_a2/}
}