Singh, A. N. “Spines As a Rare Character Observed on The Endocarps of <i>Elaeocarpus angustifolius< I> Bl., The Rudraksha Plant from India”. Indian Forester, vol. 147, no. 11, Dec. 2021, pp. 1140-2, doi:10.36808/if/2021/v147i11/156239.