Fizika Tverdogo Tela, 1991 Volume 33, Issue 6,Pages 1706–1712(Mi ftt6884)
Tetrahedral-oxygen crystals $\mathrm{AB}_{2}\mathrm{O}_{4}(\mathrm{A}=\mathrm{Ba},\mathrm{Sr};\mathrm{B}=\mathrm{Al},\mathrm{Ga})$: preparation, properties and characteristics of phase transitions