Diouri, A., Boukhari, A., Aride, J., Puertas, F. and Vázquez, T. (1998) “Elaboration of α’L-C2S form of belite in phosphatic clinker. Study of hydraulic activity”, Materiales de Construcción, 48(249), pp. 23–32. doi: 10.3989/mc.1998.v48.i249.484.