@article{SM_1986_55_2_a13,
     author = {V. V. Sarafyan},
     title = {On~the limit behavior of the largest eigenvalue of an elliptic operator with a~small parameter},
     journal = {Sbornik. Mathematics},
     pages = {529--545},
     publisher = {mathdoc},
     volume = {55},
     number = {2},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1986_55_2_a13/}
}