Lei Zhang and  Tingting Xu and  Jun He and  Zhenyu Yan and  Roger Brooks,  Personalized Email Marketing Strategy: A Reinforcement Learning Approach.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2023, vol. 195(3). 167 - 174
    [viewed 08 May 2024]. Available from: https://publications.waset.org/pdf/10013019.