@article{ZNSL_1997_239_a8,
     author = {S. G. Kiselev and V. M. Markushevich},
     title = {Representation of the  {Rayleigh} wave equations in the {Sturm--Liouville} form},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {110--116},
     publisher = {mathdoc},
     volume = {239},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1997_239_a8/}
}