1. Geller, S., Bala, V.B., Crystallographic Studies of Perovskite-like Compounds. II. Rare Earth
Alluminates, Acta Cryst., 9(12), 1019-1025 (1956), doi: 10.1107/S0365110X56002965
2. Dalziel, J.A.W., Welch, A.J.E., The Perovskite-type Structures of DyAlO3, DyFeO3,
and some Related Lanthanon Mixed Oxides, Acta Cryst., 13(11), 956-958 (1960), doi: 10.1107/S0365110X60002314
3. Budnikov, P.P., Kushakovskii, V.I., Belevantsev, V.S., Study of the Gd2O3-Al2O3
and Sm2O3-Al2O3 Systems (in Russian), Dokl. AN SSSR,
165(5), 1075-1077 (1965)
4. Foex, M., Traverse, J.P., Investigation of High-Temperature Allotropic Transformations for the
Gadoliniun Sesquioxide (in French), C. R. Seances Acad. Sci., 261, 149-152 (1965)
5. Spiridonov, F.M., Stepanov V.A., Komissarova, L.N., Spitsyn, V.I., The Binary System HfO2-Gd2O3,
J. Less-Common Met., 14(4), 435-443 (1968), doi:10.1016/0022-5088(68)90167-7