Chauhan, Shakti, and Anil Sethy. 2016. “Differences in Dynamic Modulus of Elasticity Determined by Three Vibration Methods and Their Relationship With Static Modulus of Elasticity”. Maderas. Ciencia Y Tecnología 18 (2):373-82. https://revistas.ubiobio.cl/index.php/MCT/article/view/2382.