Singh, A. P. and Bhandari, R. S. (2003) “Butterfly Diversity in Tropical Moist Deciduous Sal (<I>Shorea robusta</I>) Forests of Dehra Dun Valley: the Lower Western Himalayas”, Indian Forester, 129(10), pp. 1257–1269. doi: 10.36808/if/2003/v129i10/2403.