W. . Gurut, H. Wahid, D. H. . Burhanuddin, and E. J. . Mohamad, “Design of IoT Based Air Quality Monitoring Device with Optimal Solar-based Power Source: Worldey Gurut, Herman Wahid*, Dirman Hanafi Burhanuddin, Elmy Johana Mohamad”, TSSA, vol. 4, no. 2, pp. 21–31, Nov. 2021.