Geodesic
Method of functional integration and an~eikonal approximation for potential scattering amplitudes
Teoretičeskaâ i matematičeskaâ fizika, Tome 4 (1970) no. 1, pp. 22-32

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The asymptotic behavior of the potential scattering amplitude of hlgh-energy particles is studied by the functional integration in technique. An eikonal approximation, is found that dlffers from the usual approximation. The connection between this representation and the elkonal approximation in a quantum field model is discussed. 
@article{TMF_1970_4_1_a4,
     author = {V. N. Pervushin},
     title = {Method of functional integration and an~eikonal approximation for potential scattering amplitudes},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {22--32},
     publisher = {mathdoc},
     volume = {4},
     number = {1},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1970_4_1_a4/}
}
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V. N. Pervushin. Method of functional integration and an~eikonal approximation for potential scattering amplitudes. Teoretičeskaâ i matematičeskaâ fizika, Tome 4 (1970) no. 1, pp. 22-32. http://geodesic.mathdoc.fr/item/TMF_1970_4_1_a4/