TY  - RPRT
TI  - Level dynamics for a periodically driven quantum system.
AU  - R Scharf
AU  - M Kus
PY  - 1989
DO  - 10.1103/physreva.40.4774
UR  - https://pubmed.ncbi.nlm.nih.gov/9902725/
ID  - 9902725
ER  -