@article{ZNSL_2014_422_a3,
     author = {A. P. Kachalov},
     title = {The ray type solution for the finite deformation waves in a~physically linear nonlinear inhomogeneous medium},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {47--61},
     publisher = {mathdoc},
     volume = {422},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2014_422_a3/}
}