1. Castell, L. (1975). Quantum theory of simple alternatives, inQuantum Theory and the Structure of Time and Space, Vol. II, Hanser, München.
2. Chew, G. F., and Stapp, H. P. (1986). Pregeometrical quantum mechanics, Lawrence Berkeley Laboratory preprint.
3. Drieschner, M. (1970). Quantum mechanics as a general theory of objective prediction, Thesis, Hamburg.
4. Lecture Notes in Physics 99;M. Drieschner,1979
5. Drieschner, M., Görnitz, Th., and Weizsäcker, C. F. v. (1987). Reconstruction of abstract quantum theory,International Journal of Theoretical Physics.