1. Repeatability and validity. Epidemiology for the uninitiated;Rose, G.; Barker, D.J.P.,1979
2. Observer disagreement in physical signs of the respiratory system;Smyllie, H.C.; Blendis, L.M.; Armitage, P.;Lancet,1965
3. The measurement of observer agreement for categorical data;Landis, JR, Koch; G.G.;Biometrics,1977
4. Observer variation in the clinical assessment of stroke;Garraway, W.M.; Akhtar, A.J.; Gore, S.M.; Prescott, R.J.; Smith, R.G.;Age and Ageing,1976
5. Br MedJ7;judgments,1980