D. K. Sharma, K. L. Sharma, C. M. Sharma, and S. K. Bhardwaj, “Effect of different phosphorus sources on yield and quality of tea (Camellia sinensis) in a hill acid soil”, Indian J Agri Sci, vol. 65, no. 8, Jun. 2012, Accessed: Oct. 29, 2025. [Online]. Available: https://epubs.icar.org.in/index.php/IJAgS/article/view/18958