1. Greenwood, R.C., Gehrke, R.J., Baker, J.D., Meikrantz, D.H.: Identification of new neutron-rich rare-earth nuclei produced in252Cf spontaneous fission. In: 4th International Conference on Nuclei Far From Stability, CERN-Service d'information scientifique, CERN 81-09, pp. 602?607 (1981)
2. Baker, J.D., Gehrke, R.J., Greenwood, R.C., Meikrantz, D.H., Novick, V.J.: J. Inorg. Nucl. Chem.42, 1547 (1980)
3. Greenwood, R.C., Gehrke, R.J., Baker, J.D., Meikrantz, D.H.: Radiochim. Acta (to be published)
4. Gehrke, R.J., Greenwood, R.C., Baker, J.D., Meikrantz, D.H.: Radiochim. Acta (to be published)
5. 252Cf sources made available through J. E. Bigelow, Coordinator for the National Transplutonium Element Production Program, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA