8Bartha L, Gyarmati G, Kiss B A, et al. Complex studies on intermediate decomposition products of ammonium paratungstate[J]. Acta Chim Sci Hum, 1979, 101(1/2): 127.
9Nasr E Fouad, Ahmed K H Nohman, Mohamed I Zaki. Spetro-thermal investigation of the decomposition intermediates developed throughout reduction of ammonium paratungstate [J]. Thermochimeca Acta, 2000, 343:139.
10Improvment in or relating to methods of preparing ammonium paratunstate [S]. GB1132156, 1968.