“…In 1975, Baud et al (8) investigated some samples with composition U V (Ta V W \V )O . They observed three tungsten bronze related phases: one tetragonal with unit cell dimensions a"5.285 and c"3.832 A > in the region 0(x/4(0.05, one cubic with a"3.788-3.848 A > , for 0.05(x/4(0.15, and another tetragonal with a"7.704-7.745 and c"3.854-3.885 A > for 0.16(x/4(0.25.…”