Solid solutions of Calcium Orthophosphate in Dicalcium Silicate. Tverdye Rastvory ortofosfata Kal'tsiya b dvukhal'tsievom Silikate /
Toropov, N. A.
Fedorov, N. F.
Khentov, V. I.
Garston, 
1967.
[With a bibliography.]
Duplicated.