Geodesic
On the geometry of wave fronts
Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta, no. 3 (2006), pp. 79-80 
P. D. Lebedev; A. A. Uspenskii. On the geometry of wave fronts. Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta, no. 3 (2006), pp. 79-80. http://geodesic.mathdoc.fr/item/IIMI_2006_3_a35/
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     title = {On the geometry of wave fronts},
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     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IIMI_2006_3_a35/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

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