Nazarian, S., Yuan, D., Tandon, V., Arellano, M., (2005). Quality management of flexible pavement layers by seismic methods, Research Report 0-1735-3, The Center for Transportation Infrastructure Systems, The University of Texas at El Paso, El Paso, Texas.
Rydén, N., (2009). Determining the asphalt mastercurve from free–free resonant testing on cylindrical samples. In: Proceedings of the 7th International Symposium on Non-Destructive Testing in Civil Engineering (NDTCE09). Nantes, France.
Schaeffer, K., Bearce, R., Wang, J., (2013). Dynamic modulus and damping ratio measurements from free–free resonance and fixed-free resonant column procedures. J. Geotech. Geoenviron. Eng. 139, 2145–2155.
Guimond-Barrett, A., Nauleau, E., Le Kouby, A., Pantet, A., Reiffsteck, P., (2013). Free–free resonance testing of in situ deep mixed soils. Geotechn. Test. J. 36(2), 283–291.
Verástegui, R.D., Di Emidio, G., Bezuijen, A., Vanwalleghem, J., Kersemans, M., (2015). Evaluation of the free–free resonant frequency method to determine stiffness moduli of cement-treated soil, Soils and Foundations 55, 943–950.
Wayen, E., Sam, S., (1962). Cross-Sectional Correction for Computing Young’s Modulus for Longitudinal Resonance Vibrations of Square and Cylindrical Rods, Journal of Research of the National Bureau of Standards-A. Physics and Chemistry 66A(2), March-April.