1. Amin A. (August 2001). "Piezoresistivity in Ruthenium-Based Metal-Insulator-Metal
2. of Concrete in Compression" Vol. 04.02 American Society for Testing of Materials. Carmona F.; Canet R. and Delhaes P. (April 1987). "Piezoresistivity of Heterogeneous Solids"
3. Journal of Applied Physics V.61 No.7 2550-2557. Chen Pu-Woei; and Chung D. D. L. (1996). "Conductive Filler Reinforced Concrete for Smart
4. Structures Capable of Non-destructive Flaw Detection" Smart Materials and Structures Vol.2. CIGMAT PC 5-00 "Standard Test Method for Compressive Properties of Polymer Concrete"