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2. Heinrich, Proc. 1960 University of New Mexico Conference on Organic Scintillation Detectors, U.S.A.E.C., Washington, D. C. (1960), pp. 312–328.
3. Heinrich, Proc. Second Symposium on Radioactivity in Man—Applications of Whole-Body Counting, Northwestern University Medical School, Chicago, Ill., Sept. 5–7, 1962 (in press).
4. Heinrich and Pfau, Atomkernenergie 6: 463 (1961).
5. Heinrich and Gabbe, in: Proc. Second European Symposium on Vitamin B12 and Intrinsic Factor, Enke, Stuttgart (1962), pp. 638–663.