DOPPLER SHIFT IN X-RAY SPECTRUM FOR LASER-IMPLODED SPHERICAL MICROSHELLS H. FIEDOROWICZ, S. DENUS, K. JEZIAK, M. KOLANOWSKI, P. PARYS, W. PAWLOWICZ et J. WOLOWSKI J. Phys. Colloques, 49 C1 (1988) C1-369-C1-389 DOI: 10.1051/jphyscol:1988180