TY  - RPRT
TI  - Extended projector method: Application to a spin-boson system.
AU  - M Vanhimbeeck
AU  - De Raedt H
AU  - D Schoemaker
PY  - 1987
DO  - 10.1103/physreva.36.4612
UR  - https://pubmed.ncbi.nlm.nih.gov/9898720/
ID  - 9898720
ER  -