@article{SM_2014_205_1_a0,
     author = {R. S. Ismagilov},
     title = {On spectral perturbation caused by bounded variation of potential},
     journal = {Sbornik. Mathematics},
     pages = {1--6},
     publisher = {mathdoc},
     volume = {205},
     number = {1},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2014_205_1_a0/}
}