TY  - JOUR
A1  - Landis, J.R.
A1  - Koch, G.G.
T1  - Measurement of observer agreement for categorical data
Y1  - 1977
DO  - 10.2307/2529310
JF  - Biometrics
VL  - 33
IS  - 1
SP  - 159
EP  - -174

ER  -