M. RAMESH, et al. “HETEROSIS AND COMBINING ABILITY FOR YIELD AND YIELD COMPONENT CHARACTERS OF NEWLY DEVELOPED CASTOR (RICINUS COMMUNIS L.) HYBRID”. The Bioscan, vol. 8, no. Supplement 4, Aug. 2013, pp. 1421-4, https://thebioscan.com/index.php/pub/article/view/451.