G. Sharma, R. Anand, and O. C. Sharma, “Floral biology and effect of pollination in apple (Malus x domestics)*”, Indian J Agri Sci, vol. 75, no. 10, Oct. 2005, Accessed: Oct. 27, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/9192