Geodesic
On one waves in media, containing of loosely bonded interface
Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 18, Tome 173 (1988), pp. 113-122 
P. V. Krauklis; L. A. Krauklis. On one waves in media, containing of loosely bonded interface. Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 18, Tome 173 (1988), pp. 113-122. http://geodesic.mathdoc.fr/item/ZNSL_1988_173_a9/
@article{ZNSL_1988_173_a9,
     author = {P. V. Krauklis and L. A. Krauklis},
     title = {On one waves in media, containing of loosely bonded interface},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {113--122},
     year = {1988},
     volume = {173},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1988_173_a9/}
}
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New type waves ($K_r$-waves) propagating in the media with loosely bouded interfaces are described. The group velocity of waves is intermediate between that of $p$-wave and that of $S$-wave, the phase velocity equal that of $p$-wave. The frequency of $K_r$-waves is almost constant and determined by a requirement of the constructive interference. The $K_r$-waves are like to the Crary waves in the floating ice.