Kumar, Santosh, and M. B. Raizada. “Survey and Distribution of Fern - Allies and Ferns of Chakrata Forest Division, Uttar Pradesh”. Indian Forester 115, no. 8 (August 1, 1989): 578–589. Accessed December 5, 2025. http://indianforester.co.in/index.php/indianforester/article/view/9091.