ŠTĚPÁNKOVÁ, H., KOHOUT, J., NOVÁK, Pavel, ENGLICH, J., CASPARY, E. G., LÜTGEMEIER, H. Dependence of 57Fe hyperfine field in yttrium iron garnet on ionic radius of diamagnetic defects: NMR study. Australian Journal of Physics. 1998, 51(-), 437-452. ISSN 0004-9506.