1. Discovery of the cerium isotopes
2. The Nubase evaluation of nuclear and decay properties
3. http://www.nndc.bnl.gov/ensdf/ ENSDF, Evaluated Nuclear Structure Data File, maintained by the National Nuclear Data Center at Brookhaven National Laboratory, published in Nuclear Data Sheets (Academic Press, Elsevier Science).
4. http://www.nndc.bnl.gov/nsr/NSR, Nuclear Science References, maintained by the National Nuclear Data Center at Brookhaven National Laboratory.
5. A Table of Induced Radioactivities