POLARIZATION AT PETRA AND DORIS D. P. Barber, H. D. Bremer, J. Kewisch, H. Lewin, T. Limberg, H. Mais, G. Ripken, R. Rossmanith, R. Schmidt et F. ZwackJ. Phys. Colloques, 46 C2 (1985) C2-593-C2-600DOI: https://doi.org/10.1051/jphyscol:1985273