@article{VYURU_2012_11_a2,
     author = {S. I. Kadchenko and S. N. Kakushkin},
     title = {Meanings of the {First} {Eigenfunctions} of {Perturbed} {Discrete} {Operator} with {Simple} {Spectrum} {Finding}},
     journal = {Vestnik \^U\v{z}no-Uralʹskogo gosudarstvennogo universiteta. Seri\^a, Matemati\v{c}eskoe modelirovanie i programmirovanie},
     pages = {25--32},
     publisher = {mathdoc},
     number = {11},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VYURU_2012_11_a2/}
}