“Smart irrigation system with GSM module using DC-DC converter with Regenerative Snubber”, Int. J. Emerg. Trends Sci. Technol., vol. 4, no. 09, pp. 5874–5878, Sep. 2017, Accessed: Sep. 28, 2026. [Online]. Available: http://igmpublication.com/ijetst.in/index.php/ijetst/article/view/1360