B.S. Kanwar, S.D. Bhardwaj, and G.S. Shamet. “VEGETATIVE PROPAGATION OF <em>ULMUS</em> <em>LAEVIGATA</Em> BY STEM CUTTINGS”. Journal of Tropical Forest Science (JTFS), vol. 8, no. 3, Mar. 1996, pp. 333-8, https://jtfs.frim.gov.my/jtfs/article/view/1757.