Geodesic
Transversally inhomogeneous cochlear WKB-model
Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 19, Tome 179 (1989), pp. 128-138 
S. M. Novoselova. Transversally inhomogeneous cochlear WKB-model. Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 19, Tome 179 (1989), pp. 128-138. http://geodesic.mathdoc.fr/item/ZNSL_1989_179_a14/
@article{ZNSL_1989_179_a14,
     author = {S. M. Novoselova},
     title = {Transversally inhomogeneous cochlear {WKB-model}},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {128--138},
     year = {1989},
     volume = {179},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_179_a14/}
}
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JO  - Zapiski Nauchnykh Seminarov POMI
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VL  - 179
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1989_179_a14/
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%G ru
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Inhomogeneous cross-section of the model is constructed on the base of experimental data by Retzius, Hardesty, Wever and Miller. It is shown, that transverse non-homogeneity provides considerable sharpening of the frequency selectivity and some decreasing of phase lag at CF in the used linear three-dimensional wave-guide model without negative damping.