Awoyemi, Lawrence. “Mechanical Anisotropy of Birch (<I>Betula pubescens< I>), Scots Pine (<I>Pinus sylvestris< I> L.) and Norway Spruce (<I>Picea abies< I>)”. Indian Forester 132, no. 1 (January 1, 2006): 73–78. Accessed December 5, 2025. http://indianforester.co.in/index.php/indianforester/article/view/4261.