1. W. Pauli, Scientific Correspondence, Vol. II, ed. K. von Meyenn (Springer-Verlag, 1985), p. 15.
2. W. Pauli, Scientific Correspondence, Vol. III, ed. K. von Meyenn (Springer-Verlag, 1993), p. 380.
3. Quantized Space-Time
4. Lect. Notes Phys.;Connes A.,1984