TY  - RPRT
TI  - Density matrices derived from polynomial approximations and other models.
AU  - AK Theophilou
AU  - NH March
PY  - 1986
DO  - 10.1103/physreva.34.3630
UR  - https://pubmed.ncbi.nlm.nih.gov/9897703/
ID  - 9897703
ER  -