Wang, J. , Zhang, X. and Zhu, Y. (2022) “RETRACTED: A multi-keyword parallel ciphertext retrieval scheme based on inverted index under the robot Distributed system [EAI Endorsed Scal Inf Syst (2022), Online First]”, EAI Endorsed Transactions on Scalable Information Systems, 9(36), p. e18. doi:10.4108/eai.8-4-2022.173798.