KOCÁB, D.; MISÁK, P.; JINDROVÁ, B.; ALEXA, M.; VYMAZAL, T. ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY. Acta Polytechnica CTU Proceedings, [S. l.], v. 22, p. 48–51, 2019. DOI: 10.14311/APP.2019.22.0048. Disponível em: https://ojs.cvut.cz/ojs/index.php/APP/article/view/5649. Acesso em: 7 may. 2024.