Ünal Kızıl and  Levent Genç and  Sefa Aksu and  Ahmet Tapınç,  Performance Comparison of a Low Cost Air Quality Sensor with a Commercial Electronic Nose.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2015, vol. 104(8). 770 - 773
    [viewed 16 May 2022]. Available from: https://publications.waset.org/pdf/10001843.