1. Alexander, M. G., & Milne, T. I. (1995). Influence of cement blend and aggregate type on the stress-strain behavior and elastic modulus of concrete. Materials Journal, 92(3), 227–235.
2. ASTM C215. (2002). Standard Test Method for Fundamental Transverse, Longitudinal, and Torsional Resonant Frequencies of Concrete Specimens. Annual Book of ASTM Standards, Volume: 04.02: American Society for Testing and Materials.
3. ASTM C469. (2006). Standard test method for static modulus of elasticity and poisson’s ratio of concrete in compression. Annual Book of ASTM Standards, Vol. 04.02: American Society for Testing and Materials.
4. Azenha, M., Magalhães, F., Faria, R., & Cunha, Á. (2010). Measurement of concrete E-modulus evolution since casting: A novel method based on ambient vibration. Cement and Concrete Research, 40(7), 1096–1105.
5. Balooch, G., Marshall, G. W., Marshall, S. J., Warren, O. L., Asif, S. A. S., & Balooch, M. (2004). Evaluation of a new modulus mapping technique to investigate microstructural features of human teeth. J. Biomechanics, 37, 1223–1232.