Verma, K. S., et al. “Response of Black Locust (<I>Robinia pseudacacia< I> Linn.) to Phosphorus and Modybdenum Application under Nursery Conditions”. Indian Forester, vol. 116, no. 9, Sept. 1990, pp. 748-51, doi:10.36808/if/1990/v116i9/8906.