1. I. L. JENKINS, A. G. WAIN, Int. J. Appl. Radiat. Isotopes, 22 (1971) 429.
2. K. HATA, H. BABA, H. UMEZANA, T. SUZUKI, Int. J. Appl. Radiat. Isotopes. 27 (1976) 713.
3. J. AALTONEN, M. HAAPARANTA, Proc. 2nd Symp. on the Medical Application of Cyclotrons, Turku, Finland (1980). Turun yliopiston julkaisuja, sarja D, 1981.
4. R. O. LINGJAERDEN, The Radiochemistry of Plutonium, NAS-NS 3058, 1960 p. 129.
5. C. M. LEDERER, V. S. SHIRLEY (Eds), Table of Isotopes, I. Wiley and Sons, Inc. New York, 1978.