Structural effect of heavy ion irradiation on GdBaCuO ceramics M.-O. Ruault, H. Bernas, M. Gasgnier, J.-C. Levet, H. Noel, P. Gougeon et M. Potel Rev. Phys. Appl. (Paris), 25 1 (1990) 49-53 DOI: 10.1051/rphysap:0199000250104900