Geodesic
Generalized wave operators and regularization of perturbation series
Teoretičeskaâ i matematičeskaâ fizika, Tome 2 (1970) no. 1, pp. 80-86

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The concept of generalized wave operators and of the generalized scattering operator is introduced. It is shown on specific examples how these concepts can be used in the regularization of perturbation series. In particular, perturbation of the Coulomb type is considered from this point of view. 
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     author = {L. A. Sakhnovich},
     title = {Generalized wave operators and regularization of perturbation series},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {80--86},
     publisher = {mathdoc},
     volume = {2},
     number = {1},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1970_2_1_a6/}
}
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L. A. Sakhnovich. Generalized wave operators and regularization of perturbation series. Teoretičeskaâ i matematičeskaâ fizika, Tome 2 (1970) no. 1, pp. 80-86. http://geodesic.mathdoc.fr/item/TMF_1970_2_1_a6/