Shortcomings of the Keldysh Approximation

Milonni, Peter W.

Title
Shortcomings of the Keldysh Approximation
Authors
Milonni, P.W.
Journal
Physical Review A
Volume
38
Issue
5
Year
1988
Start Page
2682
URL
ISBN/ISSN
1050-2947
DOI
10.1103/PhysRevA.38.2682