A. K. Singh, A. K. Bhattacharya, K. Singh, and B. N. Diwedi, “Evaluation of Essential oil in <I>Eucalyptus</I> Varieties Grown in Kumaon Hills (Ranikhed), Uttar Pradesh for Timber”, Indian Forester, vol. 112, no. 3, pp. 223–228, Mar. 1986.