Citation: Salvad\'o, M. A.; Pertierra, P.; Garc\'ia-Granda, S.; Garc\'ia, J. R.; Rodr\'iguez, J.; Fern\'andez-D\'iaz, M. T. (1996). Neutron powder diffraction study of \a-Ti(HPO~4~)~2~.H~2~O and \a-Hf(HPO~4~)~2~.H~2~O; H-atom positions. Acta Crystallographica Section B, 52, pp. 896-898.