Jung-Chuan Chou and  Chang-Chi Lee,  Design of Measurement Interface and System for Ion Sensors.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2009, vol. 29(5). 1107 - 1110
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10937.