Tam, Nguyen. “Measurement of Asphalt Pavement Layer Thickness of Road Using Ground Penetrating Radar”. Science & Technology Development Journal: Natural Sciences 3, no. 3 (December 30, 2019): 150-159. Accessed April 23, 2024. http://stdjns.scienceandtechnology.com.vn/index.php/stdjns/article/view/593.