@article{SM_1969_7_4_a0,
     author = {D. Sh. Lundina and V. A. Marchenko},
     title = {Refinement of inequalities characterizing stability of the inverse problem of scattering theory},
     journal = {Sbornik. Mathematics},
     pages = {467--476},
     year = {1969},
     volume = {7},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1969_7_4_a0/}
}