S. SHUKLA, K. R. KHANNA, and S. P. SINGH, “Genetics of morphinane alkaloids in opium poppy (Papaver somniferum)”, Indian J Agri Sci, vol. 64, no. 7, Apr. 2013, Accessed: Oct. 23, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/29316