PŘEVOROVSKÝ, Z., KROFTA, J., KOBER, J., CHLADA, M. Nondestructive inspection of concrete structures by nonlinear elastic wave spectroscopy methods. E-Journal of Nondestructive Testing & Ultrasonics. 2014, 19(12). ISSN 1435-4934. Dostupné z: http://www.ndt.net/events/ECNDT2014/app/content/Slides/642_Prevorovsky_Rev1.pdf