Citation: Masse, R.; Guitel, J. C.; Durif, A. (1977). Structure cristalline du tetrametaphosphate de praseodyme-ammonium, PrNH~4~P~4~O~12~. Donnees cristallographiques de PrNH~4~P~4~O~12~. Acta Crystallographica B (24,1968-38,1982), 33, pp. 630-632.
Formula: H4 N O12 P4 Pr
Chemical name:PRASEODYMIUM AMMONIUM CYCLO-TETRAPHOSPHATE