H. G. Rodriguez, R. Maiti, P. C. R. Balboa, J. G. M. Moncivaias, and A. Kumari, “Comparative Leaf Surface Anatomy of Woody Species of Tamaulipan Thornscrub, North-Eastern Mexico and its Possible Relation with Taxonomic Delimitation and Drought Resistance”, IJBSM, vol. 7, no. Oct, 5, pp. 1109–1119, Oct. 2016.