1. Recycled concrete as a source of aggregate;Buck;ACI J,1997
2. Letters to the Editor;Collepardi;Concrete Int,2002
3. CMRA 2004, .
4. Waste concrete as aggregate for new concrete;Frondistou-Yannas;ACI J,1977
5. Strength of recycled concrete made from crushed concrete coarse aggregate;Hansen;Concrete Int,1983