1. Recommended method for the determination of creatine kinase in blood;The Committee on Enzymes of the Scandinavian Society for Clinical Chemistry and Clinical physiology;Scand J Clin Lab Invest,1976
2. Recommended method for the determination of creatine kinase in blood modified by the inclusion of EDTA;The Committee on Enzymes of the Scandinavian Society for Clinical Chemistry and Clinical physiology (SCE);Scand J Clin Lab Invest,1979
3. Standardization of methods for the estimation of enzyme activities in biological fluids. Standard method for the determination of creatine kinase àctivity Revised Draft of 1976;Recommendations of the German Society for Clinical Chemistry;J Clin Chem Clin Biochem,1977
4. Chemie Empfohlene Methoden zur Bestimmung von 3 Enzymen im Blutplasma: ASAT-ALAT-CK;Fachkommission der Schweizerischen Gesellschaft fur Klinische;Bull Schweiz Ges Klin Chem (Supplement),1980