1. The generalized Lichnerowicz formula and analysis of Dirac operators;Ackermann;Mannheimer Manuskripte,1995
2. Heat Kernels and Dirac Operators;Berline,1992
3. Non-commutative geometry and physics;Connes;IHES preprint,1993
4. Particle models and non-commutaive geometry;Connes,1990