@article{journals/vc/ZhangLZX14,
  author    = {Yun Zhang and
               Jian Ling and
               Xiaohong Zhang and
               Hao Xie},
  title     = {Image copy-and-paste with optimized gradient},
  journal   = {The Visual Computer},
  volume    = {30},
  number    = {10},
  pages     = {1169--1178},
  year      = {2014}, 
}