@article{LiangChingtarn2005,
    author = "Chingtarng, Liang and Schotte, K.D.",
    title = "Structural changes and Jahn-Teller-effect of K2 Cu F4 under pressure",
    journal = "Journal of the Physical Society of Japan",
    year = "2005",
    volume = "74",
    pages = "3221-3226",
    ASTM_id = "JUPSAU"
}

@article{Hidaka1983,
    author = "Hidaka, M. and Inoue, K. and Yamada, I. and Walker, P.J.",
    title = "X-ray diffraction study of the crystal structures of K2 Cu F4 and K2 Cux Zn1-x F4",
    journal = "Physica B and C (Netherland) (79,1975-)",
    year = "1983",
    volume = "121",
    pages = "343-350",
    ASTM_id = "PHBCDQ"
}