- Space-Time Code // International Atomic Agency, International Centre for Theoretical Physics, Italy: 25 March 1968. (DjVu-file, 7 Mb) [distributed 17.06.2011]
- Unified Quantum Theory // Conference on Quantum Theory and Structure of Time and Space, July 1974. (DjVu-file, 9.7 Mb) [distributed 17.06.2011]