EFFECT OF THE ONE-DIMENSIONAL STRUCTURE ON THE ENERGY TRANSFER IN Li6Gd (BO3)3 C.T. Garapon, B. Jacquier, Y. Salem et R. Moncorge J. Phys. Colloques, 46 C7 (1985) C7-141-C7-145 DOI: 10.1051/jphyscol:1985727