TY  - RPRT
TI  - Computationally efficient gradients for relaxation matrix-based structure refinement including the accommodation of internal motions.
AU  - M J Dellwo
AU  - J Wand
PY  - 1993
DO  - 10.1007/bf00178262
UR  - https://pubmed.ncbi.nlm.nih.gov/8386575/
ID  - 8386575
ER  -