Montree Kumngern and  Kobchai Dejhan,  Versatile Dual-Mode Class-AB Four-Quadrant Analog Multiplier.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2008, vol. 20(8). 1733 - 1740
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/401.