Tharini N. de Silva and  Xiao Zhibo and  Zhao Rui and  Mao Kezhi,  Causal Relation Identification Using Convolutional Neural Networks and Knowledge Based Features.   journal   = {International Journal of Computer and Systems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    April 2017, vol. 126(6). 696 - 701
    [viewed 15 November 2019]. Available from: https://publications.waset.org/pdf/10007217.