Modgil, D., and M. Kapil. 1990. “Allelopathic Activity of <I>Pinus roxburghii< I> Sarg, and <I>Rhododendron arboreum< I> SM. Leaves”. Indian Forester 116 (6):512-14. https://doi.org/10.36808/if/1990/v116i6/8863.