@article{ZNSL_1992_203_a1,
     author = {V. M. Babich},
     title = {Case of an exact integrability of $SH$-wave equation},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {12--16},
     publisher = {mathdoc},
     volume = {203},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1992_203_a1/}
}