TY  - RPRT
TI  - Non-Abelian geometric phase and generalized invariant method.
AU  - O Kwon
AU  - C Ahn
AU  - Y Kim
PY  - 1992
DO  - 10.1103/physreva.46.5354
UR  - https://pubmed.ncbi.nlm.nih.gov/9908779/
ID  - 9908779
ER  -