TY  - RPRT
TI  - Letters to the editor.
AU  - D FREIFELDER
AU  - P F DAVISON
PY  - 1963
DO  - 10.1016/s0006-3495(63)86806-x
UR  - https://pubmed.ncbi.nlm.nih.gov/13959527/
ID  - 13959527
ER  -