1. Tanyidzit, P. and Coskun, A., Determination of the principal parameter of ultrasonic pulse velocity and compressive strength of lightweight concrete by using variance method, Russ. J. Nondestr. Test., 2008, vol. 44, no. 9, pp. 639–646.
2. Turgut, P. and Kucuk, O.F., Comparative relationships of direct, indirect, and semi-direct ultrasonic pulse velocity measurements in concrete, Russ. J. Nondestr. Test., 2006, vol. 42, no. 2, pp. 745–751.
3. Zülfü, C., Ulucan Kazím Türk, and Mehmet Karatas, Effect of mineral admixtures on the correlation between ultrasonic velocity and compressive strength for self-compacting concrete, Russ. J. Nondestr. Test., 2008, vol. 44, no. 5, pp. 367–374.
4. Brozovsky, J., Bodnarova, L., Hela, R., Drochytka, R., and Hela, V., Evaluation of degradation of concrete exposed to high temperature by means of ultrasonic pulse method, Appl. Mech. Mater., 2012, vols. 284–287, pp. 1315–1319.
5. Olomo, O., Aderinlewo, O., Tanimola, M., and Croope, S., Assessment of the material properties of a fire damaged building, Constructii, 2012, vol. 13, no. 2, pp. 16–23.