1. Schieb P, Hardtl R. The change of mortar properties as result of fly ash processing. In: Proc CANMET/ACI int conf Trondheim; 1989. p. 277–91.
2. Mechanical treatment of fly ashes Part II: particle morphologies in ground fly ashes (GFA) and workability of GFA-cement mortars;Paya;Cem Concr Res,1996
3. Dhir RK, Hubbard FH, Munday JGL, Jones MR. Characteristics of low-lime fly ashes significant to their use in concrete. In: Proc CANMET/ACI int conf Madrid, SP 91-33; 1986. p. 693–721.
4. Contribution of PFA to concrete workability and strength development;Dhir;Cem Concr Res,1988
5. Kobuku M. Fly ash and fly ash cement. In: Proc fifth intl symp on the chemistry of cement, Tokyo; 1968, vol. IV. p. 75–105.