SINGH, K. P.; AGRAWAL, K. N.; JAT, D.; KUMAR, M.; KUSHWAHA, H. L.; SHRIVASTAVA, P.; TRIPATHI, H. Design, Development and Evaluation of Furrow Opener for Differential Depth Fertilizer Application. Indian J Agri Sci 2016, 86 (2), 250–5. https://doi.org/10.56093/ijas.v86i2.55999.