01034nam0-22003011i-450-99000103567040332120040526143305.03-211-81676-3000103567FED01000103567(Aleph)000103567FED0100010356720020001d--------km-y0itay50------baengNew Developments in Mathematical PhysicsProceedings of the XX Internationale Universitatswochen fur Kernphysik 1981 der Karl-Franzens-Universitat Graz at Schladming (Steiermark, Austria) February 17th-26th, 1981Edited by Heinrich Mitter and Ludwig PittnerWien [etc.]Springer-Verlag1981Fisica matematicaFisica teorica530Mitter,Heinrich44168Pittner,LudwigITUNINARICAUNIMARCBK99000103567040332120-109F12003FI1FI1New Developments in Mathematical Physics338920UNINA