@article{SJIM_2010_13_3_a13,
     author = {E. I. Romenskiǐ and A. D. Sadykov},
     title = {On modelling the frequency transformation effect in elastic waves},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {117--125},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2010_13_3_a13/}
}