1. Interval and scale effect algebras;Bennett;Adv. in Appl. Math.,1997
2. Unsharp localization and causality in relativistic quantum theory;Busch;J. Phys. A,1999
3. The Quantum Theory of Measurement,;Busch,1996
4. Reasoning in Quantum Theory. Sharp and Unsharp Quantum Logics;Dalla Chiara,2004
5. New Trends in Quantum Structures;Dvurečenskij,2000