TY - BOOK AU - Divakar K M Ujjual AU - Dr G L Bhalla Supervisor AU - University of Delhi. Faculty of Science. Department of Physics and Astrophysics ED - University of Delhi. Faculty of Science. Department of Physics and Astrophysics TI - Effect of y-ray and heavy ion (250 MeV Ag+17) irradiation on the vortex dynamics of YBa2Cu3O7-8 superconductor PY - 1999/// KW - PHYSICS ER -