STUDY OF THE NEUTRON-PROTON WEAK INTERACTION AT THE ILL REACTOR M. Avenier, G. Bagieu, J.F. Cavaignac, D.H. Koang, A. Idrissi, B. Vignon and R. Wilson J. Phys. Colloques, 45 C3 (1984) C3-99-C3-102 DOI: 10.1051/jphyscol:1984320