@article{Ottinger2005,
    author = "Ottinger, F. and Nesper, R.",
    title = "Syntheses and crystal tructure of the nitridosilicates Ca5 (Si2 N6) and Ca7 (Nb Si2 N9).",
    journal = "Zeitschrift fuer Anorganische und Allgemeine Chemie (1950) (DE)",
    year = "2005",
    volume = "631",
    pages = "1597-1602",
    ASTM_id = "ZAACAB"
}