1. The fixation of radioactive digitoxin by isolated hearts;Sjoerdsma;Circulation,1951
2. Studies on the renal excretion of radioactive digitoxin in human subjects with cardiac failure;Okita;Circulation,1953
3. Biosynthesis and isolation of carbon-14-labeled digitoxin;Okita;J. Pharmacol. & Exper. Therap.,1954
4. Blood level studies of C14-digitoxin in human subjects with cardiac failure;Okita;J. Pharmacol. & Exper. Therap.,1955
5. Intracellular distribution of digitoxin-C14 in the heart;Harvey;J. Pharmacol. & Exper. Therap.,1955