Sanyal, S. N., and C. N. Pandey. “Relationship Between Ultrasound Attenuation and Specific Gravity of Timber”. Indian Forester 104, no. 9 (September 1, 1978): 615–620. Accessed July 10, 2025. https://indianforester.co.in/index.php/indianforester/article/view/11509.