KBRS Visarada; M Sailaja; NP Sarma, 'Effect of callus induction media on morphology of embryogenic calli in rice genotypes', Biologia Plantarum, vol. 45, 495–502, 2002
International Food Policy Research Institute (IFPRI), 'GHI: A decade of promoting action against hunger and malnutrition', International Food Policy Research Institute (IFPRI), Washington, D.C., 2016