1. International Commission on Radiation Units and Measurements, ICRU Report 49, 1993, Bethesda, MD
2. http://www.uni-linz.ac.at/fak/TNF/atomphys/STOPPING/welcome.htm
3. J.F. Ziegler, J.P. Biersack, U. Littmark, in: The Stopping and Ranges of Ions in Matter, Vol. 1, Pergamon, New York, 1985
4. Diskettes that were available from J.F. Ziegler
5. http://www.research.ibm.com/ionbeams/