Wen-xiang Gu and Zeng-yu Cai and Xin-mei Zhang and Gui-dong Jiang, Creating or Destroying Objects Plan in the Graphplan Framework . journal = {International Journal of Industrial and Manufacturing Engineering}, [online]. World Academy of Science, Engineering and Technology. April 2007, vol. 4(4). 94 - 97 [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/4429.