@article{Kuz'micheva1976,
    author = "Kuz'micheva, G.M. and Eliseev, A.A.",
    title = "Crystal structure of delta-(Yb2 S3)",
    journal = "Zhurnal Neorganicheskoi Khimii",
    year = "1976",
    volume = "21",
    pages = "2838-2840",
    ASTM_id = "ZNOKAQ"
}

@article{Cenzual1991,
    author = "Cenzual, K. and Gelato, L.M. and Penzo, M. and Parthe, E.",
    title = "Inorganic structure types with revised space groups.I.",
    journal = "Acta Crystallographica, Section B: Structural Science",
    year = "1991",
    volume = "47",
    pages = "433-439",
    ASTM_id = "ASBSDK"
}