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2. Moving forward: recyclers and generators of scrap gypsum are attempting to widen end markets;Townsend;C&D Recycler,2003
3. T.G. Townsend, Characteristics of leachate from construction and demolition waste landfills. Florida Center for Solid and Hazardous Waste Management, Report 98-4, 1998, 46 p.
4. The New Concrete;Collepardi,2006
5. Revisiting the microstructure of hydrated tricalcium silicate: a comparison to Portland cement;Kjellsen;Cem. Concrete Comp.,2004