Bir, S. S. and Sharma, M. (1980) “<I>Euphorbia royleana</I> Boiss. An Epiphyte on <I>Anogeissus latifolius</I> (Roxb) Wali.Ex Bedd”., Indian Forester, 106(10), pp. 744–746. doi: 10.36808/if/1980/v106i10/11259.