SPIN-SPIN RELAXATION OF Yb3+ IN PARAMAGNETIC DyAlO3, TbAlO3 AND HoAlO3J.A. Hodges et P. ImbertJ. Phys. Colloques, 40 C2 (1996) C2-253-C2-254DOI: https://doi.org/10.1051/jphyscol/1979253