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Hagedorn, George A.; Joye, Alain A time-dependent Born-Oppenheimer approximation with exponentially small error estimates. (English) Zbl 1161.81376 Commun. Math. Phys. 223, No. 3, 583-626 (2001). MSC: 81Q05 81Q20 81V55 PDFBibTeX XMLCite \textit{G. A. Hagedorn} and \textit{A. Joye}, Commun. Math. Phys. 223, No. 3, 583--626 (2001; Zbl 1161.81376) Full Text: DOI arXiv