Balakrishnan, N., R. A. Kumar, K. S. Narayanan, R. Shanmugasudarm, M. Sureshbabu, and H. S. Jeersath. “Quadcopter for Agricultural Use”. International Journal For Research In Mechanical & Civil Engineering, vol. 3, no. 4, Apr. 2017, pp. 34-42, doi:10.53555/mce.v3i4.501.