@article{VSGU_2012_6_a4,
     author = {D. G. Rakhimov},
     title = {On reguliration multiple eigenvalue by reduction pseudoperturbation methods},
     journal = {Vestnik Samarskogo universiteta. Estestvennonau\v{c}na\^a seri\^a},
     pages = {35--41},
     publisher = {mathdoc},
     number = {6},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VSGU_2012_6_a4/}
}