DETERMINATION OF THE V4-CENTER STRUCTURE IN KBr CRYSTAL BY MEANS OF DOUBLE ALIGNMENT CHANNELING TECHNIQUE Y. MITSUSHIMA, K. MORITA, N. MATSUNAMI et N. ITOH J. Phys. Colloques, 37 C7 (1976) C7-95-C7-100 DOI: 10.1051/jphyscol:1976714