Bhandari, R. S., and Pratap Singh. “Tent Caterpillar Epidemic in Betula Utilis Forest in Pithoragarh District of Uttar Pradesh and Its Control”. Indian Forester 117, no. 4 (April 1, 1991): 267–273. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/8610.