1. Warner J. Preplaced-aggregate concrete. Concrete International, (September), 34–38; 2005. Retrieved from .
2. Prepakt method of concrete repair;Davis;J Am Concr Inst,1960
3. Two special methods of restoring and strengthening masonry structures;Kelly;ACI J Proc,1946
4. Guide for Use of Preplaced Aggregate Concrete for Structural & Mass Concrete Applications: ACI 304.1,2005
5. Critical overview of two-stage concrete: properties and applications;Najjar;Constr Build Mater,2014