1. Spin und Torsion in der algemeinen Relativitätstheorie;Hehl;Habilitation thesis TU Clausthal,1970
2. F.W. Hehl and B.K. Datta, J. Math. Phys., to be published.
3. Minimal and nonminimal gravitational interactions and the asymmetric energy-momentum tensor;Hayashi,1971
4. Observable effects of torsion in space-time;Ponomariev,1971
5. LXXXVII. Non-symmetric stress-energy-momentum tensor and spin-density