Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOMATSU Toshimitsu and YANO Shinichiro and KOHASHI Naoko and GUG Seung-Gi and FUJITA Kazuo,Development of Artificial Roughness with directional resistance properties,PROCEEDINGS OF HYDRAULIC ENGINEERING,0916-7374,Japan Society of Civil Engineers,1997,41,,705-710,https://cir.nii.ac.jp/crid/1390282680146761728,https://doi.org/10.2208/prohe.41.705