Citation: Ewald, Bastian; Prots, Yurii; Bostr\"om, Magnus (2004). Refinement of the crystal structure of diniobium trisoxydisulfate hydrate, Nb~2~O~3~(SO~4~)~2~ \. 0.25H~2~O. Zeitschrift f\"ur Kristallographie - New Crystal Structures, 219, pp. 89-90.