Geodesic
“Quasiphoton” on active media. II. Example: one-ditimensional wave equation with a small retarding argument
Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 16, Tome 156 (1986), pp. 136-142 Cet article a éte moissonné depuis la source Math-Net.Ru

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In this article concentrated packets of waves discussed in the previous auther's paper “Quasiphoton in active media” are explicitly constructed for the case of one-dimensional wave equation with a small retarding argument. The concept of the “frequency of propagation” and relations between the change of this frequency along the ray and the parametres of the wave packet are discussed. 
@article{ZNSL_1986_156_a11,
     author = {Ya. V. Kurylev},
     title = {{\textquotedblleft}Quasiphoton{\textquotedblright} on active {media.~II.} {Example:} one-ditimensional wave equation with a~small retarding argument},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {136--142},
     year = {1986},
     volume = {156},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1986_156_a11/}
}
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AU  - Ya. V. Kurylev
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%A Ya. V. Kurylev
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%G ru
%F ZNSL_1986_156_a11
Ya. V. Kurylev. “Quasiphoton” on active media. II. Example: one-ditimensional wave equation with a small retarding argument. Zapiski Nauchnykh Seminarov POMI, Mathematical problems in the theory of wave propagation. Part 16, Tome 156 (1986), pp. 136-142. http://geodesic.mathdoc.fr/item/ZNSL_1986_156_a11/