1. Risikoausgleich - Basis für einen sinnvollen Wettbewerb in der Krankenversicherung (Fondation of Efficiency-enhancing competition in Health Insurance);Beck,1998
2. Cream-skimming in deregulated social health insurance: evidence from Switzerland;Beck,1998
3. Risk adjustment in Switzerland;Beck;Health Policy,2003
4. Risiko Krankenversicherung—Risikomanagement in einem regulierten Krankenversicherungsmarkt (The Risky Business of Health Insurance. Risk Management in a Regulated Market for Health Insurance);Beck,2004
5. Nachhaltige Gestaltung des Risikoausgleichs in der Schweizer Krankenversicherung (Sustainable Design of Risk Adjustment in Swiss Health Insurance);Beck,2006