@article{GongCWYJ20,
  author    = {Xueluan Gong and
	Yanjiao Chen and
	Qian Wang and
	Wang Yang and
	Xinchang Jiang},
  title     = {Model Extraction Attacks and Defenses on Cloud-Based Machine Learning Models},
  journal   = {{IEEE} Communications Magazine},
  volume    = {58},
  number    = {12},
  pages     = {83--89},
  year      = {2020}
}