Y. Zhai, T. Xu, Q. Yang, W. Cao, Z. Qi, and C. Liu. CECNet, volume 345 of Frontiers in Artificial Intelligence and Applications, page 171-177. IOS Press, (2021)
J. Zhai, Y. Du, S. Hughes, and J. Hallstrom. IoT 360 (2), volume 170 of Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, page 325-330. (2015)