@article{JMAG_2010_6_3_a0,
     author = {R. F. Efendiev and H. D. Orudzhev},
     title = {Inverse wave spectral problem with discontinuous wave speed},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {255--265},
     year = {2010},
     volume = {6},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JMAG_2010_6_3_a0/}
}