Pal, Mahendra, and K K Misra. “Effect of Pollen on Fruit-Set, Fruit Drop and Final Fruit Retention in Self- and Cross-Pollination in Bael (Aegle Marmelos)”. The Indian Journal of Agricultural Sciences, vol. 75, no. 12, Dec. 2005, https://epubs.icar.org.in/index.php/IJAgS/article/view/9314.