Mondal, S., and S. Moktan. “Comparative morpho-anatomical study in Pyrrosia (Polypodiaceae) from Darjeeling Himalaya, India”. The Thailand Natural History Museum Journal, vol. 17, no. 1, June 2023, pp. 45-65, https://li05.tci-thaijo.org/index.php/thnhmj/article/view/1894.