TY  - RPRT
TI  - Ab initio direct methods: practical advice for getting beyond the first 300 atoms.
AU  - D A Langs
PY  - 1993
DO  - 10.1107/s0907444992006231
UR  - https://pubmed.ncbi.nlm.nih.gov/15299556/
ID  - 15299556
ER  -