Subandi, A., I. Idris, and A. S. Ahmad. “Experimental Study of an Aluminum-Polysilicon Thermopile for Implementation of Airflow Sensor on Silicon Chip”. Journal of Engineering and Technological Sciences, vol. 39, no. 2, Sept. 2013, pp. 98-108, doi:10.5614/itbj.eng.sci.2007.39.2.2.