Tb<sub>2</sub>Co(B<sub>2</sub>O<sub>5</sub>)<sub>2</sub> and Tb<sub>2</sub>Cu(B<sub>2</sub>O<sub>5</sub>)<sub>2</sub> – two new borates with gadolinite-type structures
Zeitschrift für Naturforschung. B, A journal of chemical sciences