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Dasgupta, A. K., Mausner, L. F., & Srivastava, S. C. (1991). A new separation procedure for 67Cu from proton irradiated Zn. International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 42(4), 371–376. doi:10.1016/0883-2889(91)90140-v 
10.1016/0883-2889(91)90140-v