@article{fcs2017,
  author    = {Chengyu Wang and
               Guomin Zhou and
               Xiaofeng He and
               Aoying Zhou},
  title     = {NERank+: a graph-based approach for entity ranking in document collections},
  journal   = {Frontiers Comput. Sci.},
  volume    = {12},
  number    = {3},
  pages     = {504--517},
  year      = {2018}
}