TY  - RPRT
TI  - Covariant Gaussian approximation. I. Formalism.
AU  - A Kovner
AU  - B Rosenstein
PY  - 1989
DO  - 10.1103/physrevd.39.2332
UR  - https://pubmed.ncbi.nlm.nih.gov/9959915/
ID  - 9959915
ER  -