@article{SM_2001_192_3_a3,
     author = {Yu. A. Konyaev},
     title = {On some methods for investigating stability},
     journal = {Sbornik. Mathematics},
     pages = {385--402},
     publisher = {mathdoc},
     volume = {192},
     number = {3},
     year = {2001},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2001_192_3_a3/}
}