Dokl. Akad. Nauk SSSR, 1982 Volume 266, Number 2,Pages 354–358(Mi dan45591)
CRYSTALLOGRAPHY
Crystal structure of acid mixed tantalum and rubidium ortho-pentaphosphate,
$\mathrm{Rb}_2\mathrm{Ta}_2\mathrm{H}(\mathrm{PO}_4)_2\mathrm{P}_5\mathrm{O}_{16}$