Prof. K.N.Attarde, Nishant Joshi, Tushar Nair, Rohan Patil, and Shruti Ghadi. “DUAL AXIS SOLAR TRACKING AND AUTOMATIC STREET LIGHT USING PIR SENSOR”. International Journal of Advance Research in Engineering, Science & Technology, vol. 3, no. 3, Mar. 2016, pp. 167-71, https://ijarest.org/index.php/ijarest/article/view/475.