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Stryczek i in. 2007 – Stryczek, S., Brylicki, W., Małolepszy, J., Gonet, A., Wiśniowski, R. i Kotwica, Ł. 2007. Influence of fly ash formed in brown coal fluidal combustion process on the properties of pastes incorporating large amount of blast-furnace slag. Ninth CANMET/ACI International Conference on the Use of fly ash, slag, silica fume and other supplementary cementing materials in concrete technology, Warsaw, Poland, May 20–25.