1. A. Ashtekar andJ. Stachel (Editors):Conceptual Problems of Quantum Gravity (Birkhäuser, Boston-Basel-Berlin, 1991).
2. H.R. Brown andR. Harré (Editors):Philosophical Foundations of Quantum Field Theory (Clarendon Press, Oxford, 1990).
3. J. Glimm andA. Jaffe:Quantum Physics, A Functional Integration Point of View, 2nd edition (Springer-Verlag, New York-Berlin-Heidelberg-London-Paris-Tokyo, 1987).
4. M. Redhead:Incompleteness, Nonlocality, and Realism, A Prolegomenon to the Philosophy of Quantum Mechanics (Clarendon Press, Oxford, 1990).
5. E. Prugovečki:Quantum Geometry, A Framework for Quantum General Relativity (Kluwer Academic Publishers, Dordrecht-Boston-London, 1992).