International Conference on Ion Implantation in Semiconductors and Other Materials,4th,Osaka,1974 International Conference on Ion Implantation in Semiconductors and Other Materials,5ht,Boulder,1976 International Conference on Hot Carriers in Semiconductors,3rd,Montpellier,1981 International Conference on Ion Implantation and Ion Beam Equipment International Conference on Recombination in Semiconductors,Univ.of Southampton,England,1978 International Conference on Recrystallization in Metallic Materials International Conference on Neutron Transmutation Doping in Semiconductors,2d,Univ.of Missouri,1978 International Conference on the Numerical Analysis of Semiconductor Devices and Integrated Circuits( International Conference on Power Electronics-Power Semiconductors and their Applications,London,197 International Conference on Power Electronics-Power Semiconductors and their Applications,Dec.3-5,1974