1. Sheppard CW, Wells EB, Hahn PF, Goodell JBP. Studies of the distribution of intravenously administered colloidal sol of manganese dioxide and gold in human beings and dogs using radioactive isotopes. J Lab. & Clin Med 1947; 32: 274–277
2. Stirret LA,Yuhl ET, Cassen B. Clinical application of hepatic radioactive surveys.Am J Gastroenterology. 1954; 21: 310–317
3. Stirret LA, Yuhl ET, Libby RL. A new technique for diagnosis of carcinoma metastatic to the liver. Surg. Gynecol, Obstret. 1953; 96: 210–215
4. Taplin GV, Meredith OM Jr, Kade H. Radioactive (I-131 tagged) rose bengal uptake -excretion test for liver function using external gamma ray scintillation counting technique. J Lab & Clin Med 1955; 45: 665–678
5. Harper PV, Lathrop KA, Jimiriez F, Fink R, Gottschalk A. Technetium-99 m as a scanning agent. Radiology 1965; 85: 101–103