Chemical and structural investigations into the formation of solid solutions of tricalcium silicate : second report: phase relations in the systems CaO-MgO-SiO2, CaO-A12O3-SiO2 /
Woermann, E.
Eysel, W.
Hahn, Th.
Garston :  Building Research Station, 
1969.
Translated from the German: Zement-kalk-gips, 1967, 56 (9), 385-91.