@article{ZNSL_1974_42_a6,
     author = {A. P. Katchalov},
     title = {Elastic {Wave} {Propagation} in {Piezodielectric} {Medium}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {155--161},
     publisher = {mathdoc},
     volume = {42},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1974_42_a6/}
}