Citation: Mathew, M.; Schroeder, L.W.; Mayer, I.; Dickens, B. (1979). Substitution in Barium-Fluoride Apatite: The Crystal Structures of Ba10 (P O/4)6 F2, Ba6 La2 Na2 (P O4)6 F2 and Ba4 Nd3 Na3 (P O4)6 F2. Journal of Solid State Chemistry, 28, pp. 79-95.