George Eleftherakis and  Petros Kefalas and  Anna Sotiriadou and  Evangelos Kehris,  Modeling Biology Inspired Reactive Agents Using X-machines .   journal   = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2007, vol. 1(1). 172 - 175
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/9448.