Citation: Ivashkevich, L.S.; Petrusevich, Yu.I.; Lyakhov, A.S.; Selevich, A.F. (2003). The crystal structure of Er (H P O4) (N O3) * 3(H2 O): ab initio determination from X-ray powder diffraction data. Zeitschrift fuer Kristallographie (149,1979-), 218, pp. 475-479.