Uwano, Yoshio A quantum saddle-node bifurcation in a \(1\: 1\) resonant perturbed oscillator with four parameters. (English) Zbl 0964.81030 Rep. Math. Phys. 44, No. 1-2, 267-274 (1999). MSC: 81Q50 37J99 37N99 81Q05 PDFBibTeX XMLCite \textit{Y. Uwano}, Rep. Math. Phys. 44, No. 1--2, 267--274 (1999; Zbl 0964.81030) Full Text: DOI
Kuna, M.; Majewski, W. A. On quantum chaos and quantum characteristic exponents. (English) Zbl 0847.58031 Rep. Math. Phys. 33, No. 1-2, 111-115 (1993). Reviewer: K.Brod (Wiesbaden) MSC: 81Q50 37D20 37N20 PDFBibTeX XMLCite \textit{M. Kuna} and \textit{W. A. Majewski}, Rep. Math. Phys. 33, No. 1--2, 111--115 (1993; Zbl 0847.58031) Full Text: DOI