TY  - RPRT
TI  - Empirical force fields for biological macromolecules: overview and issues.
AU  - Alexander D Mackerell
PY  - 2004
DO  - 10.1002/jcc.20082
UR  - https://pubmed.ncbi.nlm.nih.gov/15264253/
ID  - 15264253
ER  -