1. New amylase substrate and assay procedure;Babson, A.L.; Tenney, S.A.; Megraw, R.E.;Clin. Chem,1970
2. Determination of trypsin with benzoylarginine ethyl ester as substrate;Bergmeyer, H.U.,1965
3. A test of pancreatic function in man based on the analysis of duodenal contents after administration of secretin and pancreozymin;Burton, P.; Evans, D.G.; Harper, A.A.; Howat, H.T.; Oleesky, S.; Scott, J.E.; andVarley, H.;Gut,1960
4. A single intestinal intubation technique for multiple function studies;Cowen, A.E.; Campbell, C.B.;Gut; Micro determination of long chain fatty acids in plasma and tissues,1971
5. Estimation of trypsin in duodenal juice;Gordon, I.; Levin, B.; Whitehead, T.P.;Brit. med. J,1952