1. B.A. Graybeal, Structural Behavior of a Prototype Ultra-High Performance Concrete Pi- Girder, Report No. FHWA-HRT-10-027, FHWA, McLean, VA, 2009.
2. Characterization of the Behavior of Ultra-High Performance Concrete;Graybeal,2005
3. Cyclic behavior of hybrid columns made of ultrahigh performance concrete and fiber reinforced polymers;Zohrevand;J. Compos. Constr., ASCE,2012
4. B.A. Graybeal, Structural Behavior of Ultra-High Performance Concrete Prestressed I Girders, Report No. FHWA-HRT-06-115, FHWA, McLean, VA, 2006.
5. H.G. Russell, B.A. Graybeal, Ultra-High Performance Concrete: A State-of-the-Art Report for the Bridge Community, Report FHWA-HRT-13-060, FHWA, McLean, VA, 2013.