TY  - RPRT
TI  - Geometric phase and the generalized invariant formulation.
AU  - XC Gao
AU  - JB Xu
AU  - TZ Qian
PY  - 1991
DO  - 10.1103/physreva.44.7016
UR  - https://pubmed.ncbi.nlm.nih.gov/9905842/
ID  - 9905842
ER  -