P. S. Chauhan, R. K. Manhas, J. D. S. Negi, and L. Singh, “Dominance, Diversity and Regeneration Status of a Moist Sub-tropical <I>Shorea robusta</I> Gaertn. f. (Sal) Forest of Doon Valley, India”, Indian Forester, vol. 136, no. 4, pp. 544–552, Apr. 2010.