1. Statistical Models Based on Counting Processes;Andersen,1991
2. Actuarial Mathematics;Bowers,1997
3. Methoden der Mathematischen Physik I;Courant,1968
4. Zur aktuariellen Problematik der Invaliditätsversicherung;Dienst,1995
5. Linear Operators Part I: General Theory;Dunford,1988