Grin, Y. N., Sichevich, O. M., Gladyshevsky, R. E., Morohivsky, B. S., Gryniv, I. O., Vasylechko, L. O., et al. (1990). Phase diagrams of ternary systems RE-M-Ga (M = Co, Ni, Ge, Li) as basis for synthesis of ternary gallides of the RE and new compounds in the systems with M = Co, Ni, Pd, Ge. Physics and chemistry of rare earth semiconductors, 67-70.