MISHRA, BRIJ K, SUDHIR SHUKLA, ANU RASTOGI, and ANKITA SHARMA. 2010. “Heritability and Genetic Advance for Effective Selection in Opium Poppy (Papaver Somniferum)”. The Indian Journal of Agricultural Sciences 80 (6). https://epubs.icar.org.in/index.php/IJAgS/article/view/195.