TY  - RPRT
TI  - Kappa coefficient calculation using multiple ratings per subject: a special communication.
AU  - S M Haley
AU  - J S Osberg
PY  - 1989
DO  - 10.1093/ptj/69.11.970
UR  - https://pubmed.ncbi.nlm.nih.gov/2813523/
ID  - 2813523
ER  -