Krishna, S., and S. Ramaswami. “A Note on the Variation in the Calorific Values of Sapwood and Heartwood of Some of the Indian Fuel Woods”. Indian Forester 57, no. 3 (February 28, 1931): 111–117. Accessed August 21, 2025. https://indianforester.co.in/index.php/indianforester/article/view/19973.