@article{Yi2018SPIC,
title     = {Reversible data hiding in encrypted images using adaptive block-level prediction-error expansion},
author    = {Yi, Shuang and Zhou, Yicong and Hua, Zhongyun},
journal   = {Signal Processing: Image Communication},
volume    = {64},
pages     = {78--88},
year      = {2018},
publisher = {Elsevier}
}