Kubojima, Yoshitaka, Hideo Kato, Satomi Sonoda, and Kazuki Nanko. “Estimation of Wood Density Without Weighing Using Bending Vibration and Static Bending Tests – Effect of Span-to-Height Ratio on the Estimation Accuracy”. BioResources 20, no. 4 (October 21, 2025): 10521–10531. Accessed October 22, 2025. https://ojs.bioresources.com/index.php/BRJ/article/view/25010.