INFLUENCE OF FAST NEUTRON IRRADIATION ON DYNAMIC FRACTURE TOUGHNESS OF BAINITIC STEEL Z. BÍLEK, J. BUCHAR, J.M. MARTINEZ ESNAOLA et J. MARIA BASTERO J. Phys. Colloques, 49 C3 (1988) C3-159-C3-166 DOI: 10.1051/jphyscol:1988324