Kocáb D, Misák P, Jindrová B, Alexa M, Vymazal T. ANALYSIS OF THE INFLUENCE OF TRANSDUCER FREQUENCY ON THE ULTRASONIC MEASUREMENT OF CONCRETE HOMOGENEITY. APP [Internet]. 2019 Jul. 25 [cited 2024 May 7];22:48-51. Available from: https://ojs.cvut.cz/ojs/index.php/APP/article/view/5649