@ARTICLE{9359355,
  author={Hu, Zhe and Zheng, Yu and Pan, Jia},
  journal={IEEE Robotics and Automation Letters}, 
  title={Living Object Grasping Using Two-Stage Graph Reinforcement Learning}, 
  year={2021},
  volume={6},
  number={2},
  pages={1950-1957},
  doi={10.1109/LRA.2021.3060636}}