Geodesic
Stationary-phase method for Feynman's continual integral
Teoretičeskaâ i matematičeskaâ fizika, Tome 2 (1970) no. 1, pp. 30-35 
V. P. Maslov. Stationary-phase method for Feynman's continual integral. Teoretičeskaâ i matematičeskaâ fizika, Tome 2 (1970) no. 1, pp. 30-35. http://geodesic.mathdoc.fr/item/TMF_1970_2_1_a1/
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     title = {Stationary-phase method for {Feynman's} continual integral},
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     number = {1},
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     url = {http://geodesic.mathdoc.fr/item/TMF_1970_2_1_a1/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

The formula obtained earlier by the author, for the condition that the classical paths of the functional $\smallint Ldt$ are not degenerate, is generalized.

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