DYNAMIC FRACTURE OF GLASS MATERIALS UNDER SHOCKWAVES INDUCED BY PULSED LASER IRRADIATION AT VERY SHORT DURATIONS T. de RESSEGUIER, F. COTTET et M. BOUSTIE J. Phys. IV France, 01 C7 (1991) C7-91-C7-96 DOI: 10.1051/jp4:1991720