TY  - RPRT
TI  - Undetermined-constant method in the boson Green's-function theory.
AU  - JB Zhang
AU  - ZK Qin
PY  - 1987
DO  - 10.1103/physreva.36.915
UR  - https://pubmed.ncbi.nlm.nih.gov/9898937/
ID  - 9898937
ER  -