Manisha Mehta , Paras Chawla , Gagan Jot. “Farming of Spinach and Lettuce in Hydroponics System With IoT”. International Journal of Advanced Science and Technology, Vol. 29, no. 10s, May 2020, pp. 1743 -62, http://sersc.org/journals/index.php/IJAST/article/view/16549.