Yasar, Sekip Sadiye, Ahmet Cihangir Yalinkilic, and Mehmet Yasar. “Effect of Walnut Tannin on Wood Surface Hardness: A Study on Pine and Walnut Samples”. BioResources 19, no. 4 (October 11, 2024): 9075–9084. Accessed October 29, 2025. https://ojs.bioresources.com/index.php/BRJ/article/view/23878.