@article{AA_2004_16_2_a5,
     author = {N. Filonov},
     title = {An inequality for eigenvalues of the {Dirichlet} and {Neumann} problems for the {Laplace} operator},
     journal = {Algebra i analiz},
     pages = {172--176},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AA_2004_16_2_a5/}
}