TY  - RPRT
TI  - Classical and quantum-mechanical transition between regularity and irregularity in a Hamiltonian system.
AU  - D Wintgen
AU  - H Friedrich
PY  - 1987
DO  - 10.1103/physreva.35.1464
UR  - https://pubmed.ncbi.nlm.nih.gov/9898300/
ID  - 9898300
ER  -