Tm-169 MÖSSBAUER STUDIES OF THULIUM HYDRIDES (I) : TmH2+x F. Waibel, A. Strauss, W. Potzel, F.E. Wagner and G. Wortmann J. Phys. Colloques, 41 C1 (1980) C1-231-C1-232 DOI: 10.1051/jphyscol:1980175