Infrared and Raman spectra of magnesium ammonium phosphate hexahydrate (struvite) and its isomorphous analogues. III. Spectra of protiated and partially deuterated magnesium ammonium phosphate hexahydrate, - V. Stefov, B. Šoptrajanov, I. Kuzmanovski, H. D. Lutz, B. Engelen (My University, 2005)