@article{AA_2006_18_5_a0,
     author = {A. B. Alekseev and M. Sh. Birman and N. D. Filonov},
     title = {Spectrum asymptotics for one ``nonsmooth'' variational problem with solvable constraint},
     journal = {Algebra i analiz},
     pages = {1--22},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2006_18_5_a0/}
}