Hydrogen ordering influence on the proton spin-lattice relaxation time   in metal-hydrogen compoun Hydrogen ordering influence on the proton   spin-lattice relaxation time in metal-hydrogen compounds
  Results of the experimental study of ordering lanthanum hydrides of LaHX system are presented. It is shown that obtained results can be interpreted as an indirect confirmation of the existence of order-order transformations in LaH2+c hydrides. 
G.Mamniashvili, N.Namoradze, I.Ratishvili, Yu.Sharimanov