WASET
    Li Long and  Thomas Ortlepp,  Optimization of Thermopile Sensor Performance of Polycrystalline Silicon Film.   journal   = {International Journal of Materials and Metallurgical Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2023, vol. 199(7). 80 - 89
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10013161.