TY  - RPRT
TI  - RIGIDITY AND THE SORT.
AU  - P LANGER
AU  - C W MCKAIN
PY  - 1964
DO  - 10.1002/1097-4679(196410)20:4<489::aid-jclp2270200423>3.0.co;2-d
UR  - https://pubmed.ncbi.nlm.nih.gov/14228561/
ID  - 14228561
ER  -