1. Concrete. Structure, Properties, and Materials;Kumar Mehta,1993
2. Particle Packing Characteristics;German,1989
3. Packing density of fiber/powder blends;Starr;Am Ceram Soc Bull,1986
4. Norm UNE Serie 80, Cemento y Cales.
5. Los hormigones ligeros y los problemas acústicos;Virella Bloda;Rev Cem Hormigon,1976