@ARTICLE{10480249,
  author={Xu, Yang and Shao, Jianbo and Liu, Jia and Shen, Yulong and Taleb, Tarik and Shiratori, Norio},
  journal={IEEE Transactions on Dependable and Secure Computing}, 
  title={BWKA: A Blockchain-Based Wide-Area Knowledge Acquisition Ecosystem}, 
  year={2024},
  volume={21},
  number={6},
  pages={5617-5634},
  keywords={Ecosystems;Games;Blockchains;Sensors;Knowledge acquisition;Smart contracts;Ions;Blockchain;hierarchical game;incentive mechanism;knowledge acquisition ecosystem;smart contract},
  doi={10.1109/TDSC.2024.3382031}}