Spy: A QoS-Aware Anonymous Multi-Cloud Storage System Supporting DSSE. - Pengyan Shen; Kai Guo; Mingzhong Xiao; Quanqing Xu (CCGRID, 2015)

SpyStorage: A Highly Reliable Multi-Cloud Storage with Secure and Anonymous Data Sharing. - Pengyan Shen; Wan Liu; Zheng Wu; Mingzhong Xiao; Quanqing Xu (NAS, 2017)