@article{JMAG_1995_2_a12,
     author = {B. E. Burnaev and I. E. Tarapov},
     title = {Sound waves in a variable mass medium},
     journal = {\v{Z}urnal matemati\v{c}eskoj fiziki, analiza, geometrii},
     pages = {399--407},
     publisher = {mathdoc},
     volume = {2},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JMAG_1995_2_a12/}
}