R., S., and R. S. “Combined Effect of Retinoic Acid and Vascular Endothelial Growth Factor on Compensatory Lung Growth Following Unilateral Pneumonectomy in Rats”. International Journal of Basic & Clinical Pharmacology, vol. 5, no. 3, Dec. 2016, pp. 1075-80, doi:10.18203/2319-2003.ijbcp20161571.