S. K. Pareek, V. K. Srivastava, M. L. Maheshwari, and R. Gupta, “Performance of advance opium poppy (Papaver somniferum) selections for latex, morphine and seed yields”, Indian J Agri Sci, vol. 65, no. 7, Jun. 2012, Accessed: Oct. 29, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/18899