Sarin, Y.K., L.D. Kapoor, and I.C. Chopra. “<I>Physochlaina Prealata< I> (don.) Miers: A Hyoscyamine Yielding Plant Important in Lahaul’s Economy”. Indian Forester 89, no. 9 (September 1, 1963): 610–622. Accessed December 4, 2025. http://indianforester.co.in/index.php/indianforester/article/view/24926.