Agord M. Pinto Jr. and  Yuzo Iano and  Leandro T. Manera and  Raphael R. N. Souza,  An Optimization Tool-Based Design Strategy Applied to Divide-by-2 Circuits with Unbalanced Loads.   journal   = {International Journal of Electrical and Computer Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2015, vol. 102(6). 526 - 530
    [viewed 23 October 2019]. Available from: https://publications.waset.org/pdf/10001612.