@article{Arakcheeva1999,
    author = "Arakcheeva, A.V. and Grinevich, V.V. and Shamrai, V.F. and Meyer, M. and Chapuis, G.",
    title = "K Nb4 O5 F and Nb O2 crystal structures. Structural aspect of chemical decomposition of K2-x Nb4 O3 (O, F)3 F in the melt of sodium and potassium chlorides",
    journal = "Kristallografiya",
    year = "1999",
    volume = "44",
    pages = "6-11",
    ASTM_id = "KRISAJ"
}

@article{Bolzan1994,
    author = "Bolzan, A.A. and Fong, C. and Kennedy, B.J. and Howard, C.J.",
    title = "A powder neutron diffraction study of semiconducting and metallic niobium dioxide",
    journal = "Journal of Solid State Chemistry",
    year = "1994",
    volume = "113",
    pages = "9-14",
    ASTM_id = "JSSCBI"
}

@article{Sakata1979,
    author = "Sakata, K.",
    title = "Structural features of Nb(1-x) Tix O2",
    journal = "Acta Crystallographica B (24,1968-38,1982)",
    year = "1979",
    volume = "35",
    pages = "2836-2842",
    ASTM_id = "ACBCAR"
}

@article{Cheetham1976,
    author = "Cheetham, A.K. and Rao, C.N.R.",
    title = "A neutron diffraction study of niobium dioxide",
    journal = "Acta Crystallographica B (24,1968-38,1982)",
    year = "1976",
    volume = "32",
    pages = "1579-1580",
    ASTM_id = "ACBCAR"
}

@article{Pynn1976,
    author = "Pynn, R. and Axe, J.D. and Thomas, R.",
    title = "Structural distortions in the low-temperature phase of Nb O2",
    journal = "Physical Review, Serie 3. B - Solid State (1,1970-17,1977)",
    year = "1976",
    volume = "13",
    pages = "2965-2975",
    ASTM_id = "PLRBAQ"
}