Rao, O. P., et al. “Growth and Yield Performance of Wheat (<I>Triticum aestivum< I>) at Different Crop Distance from Tree Base under <I>Populus deltoides< I> Bartr. Ex. Marsh. Based Agri Silviculture System”. Indian Forester, vol. 143, no. 6, June 2017, pp. 577-80, doi:10.36808/if/2017/v143i6/115843.