Bolzan, A; Fong, Celesta; Kennedy, Brendan J.; Howard, Christopher J. (1994). "A Powder Neutron Diffraction Study of Semiconducting and Metallic Niobium Dioxide". Journal of Solid State Chemistry. 113 (1): 9–14. Bibcode:1994JSSCh.113....9B. doi:10.1006/jssc.1994.1334.
Bolzan, A; Fong, Celesta; Kennedy, Brendan J.; Howard, Christopher J. (1994). "A Powder Neutron Diffraction Study of Semiconducting and Metallic Niobium Dioxide". Journal of Solid State Chemistry. 113 (1): 9–14. Bibcode:1994JSSCh.113....9B. doi:10.1006/jssc.1994.1334.