Kejun Zhuang and  Hailong Zhu,  Stability and Bifurcation Analysis in a Model of Hes1 Selfregulation with Time Delay.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    July 2010, vol. 43(7). 1013 - 1015
    [viewed 05 April 2020]. Available from: https://publications.waset.org/pdf/2496.