SEIYA NAGAOKA; ISLAM MOHAMMAD RAIHANUL; KENJI OKAJIMA; RYOEI ITO; KEN WATANABE; TETSU ITO. EVALUATION OF ATTENUATION OF ULTRASONIC WAVE IN AIR TO MEASURE CONCRETE ROUGHNESS USING AERIAL ULTRASONIC SENSOR. GEOMATE Journal, [S. l.], v. 14, n. 42, p. 158–163, 2018. Disponível em: https://geomatejournal.com/geomate/article/view/972. Acesso em: 4 oct. 2022.