MAGNETIC BEHAVIOUR OF IMPERFECT QUASI ONE DIMENSIONAL INSULATORS FeMgBO4 AND FeMg2BO5 : SPIN GLASS SYSTEMS ? A. Wiedenmann et P. BurletJ. Phys. Colloques, 39 C6 (1978) C6-720-C6-722DOI: https://doi.org/10.1051/jphyscol:19786320
