TY  - RPRT
TI  - Action-angle variables for the diamagnetic Kepler problem.
AU  - D Farrelly
AU  - JA Milligan
PY  - 1992
DO  - 10.1103/physreva.45.8277
UR  - https://pubmed.ncbi.nlm.nih.gov/9906921/
ID  - 9906921
ER  -