Janotka I, Puertas F, Palacios M, Varga C, Krajči L. Metakaolin sand – a promising addition for Portland cement. Mater. constr. [Internet]. 2010Jun.30 [cited 2024Apr.26];60(298):73-88. Available from: https://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/261