Mathur, H. N. “Natural Regeneration of Tropical Pines at Tirupati-Tirumala Devasthanam Forests (Andhra Pradesh)”. Indian Forester 121, no. 5 (May 1, 1995): 425–426. Accessed October 29, 2025. https://indianforester.co.in/index.php/indianforester/article/view/7037.