De, H. C. Pan, Chhaya Singh, Pragya Joshi, and Avneet Kaur. “Taxonomic Observations on the Genus Pyrrosia Mirbel from District Chamoli of Uttarakhand State (India)”. Indian Forester 137, no. 9 (September 1, 2011): 1082–1088. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/12410.