@article{SM_2009_200_5_a6,
     author = {D. N. Tulyakov},
     title = {Difference equations having bases with powerlike growth which are perturbed by a~spectral parameter},
     journal = {Sbornik. Mathematics},
     pages = {753--781},
     publisher = {mathdoc},
     volume = {200},
     number = {5},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2009_200_5_a6/}
}