Yagüe, A., Valls, S., Vázquez, E. and Kuchinow, V. 2002. Use of dry sludge from waste water treatment plants as an additive in prefabricated concrete brick. Materiales de Construcción. 52, 267 (Sep. 2002), 31–41. DOI:https://doi.org/10.3989/mc.2002.v52.i267.324.