Citation: Bombik, A.; Lesniewska, B.; Pacyna, A.W.; Mayer, J. (2003). Crystal structure of solid solutions RE Fe1-x (Al or Ga)x O3 (RE = Tb, Er, Tm) and the correlation between superexchange interaction Fe(+3) - O(-2) - Fe(+3) linkage angles and Neel temperature. Journal of Magnetism and Magnetic Materials, 257, pp. 206-219.