@article{robustfacedetectionvialearningsmall,
  title = {Robust Face Detection via Learning Small Faces on Hard Images},
  author = {Zhishuai Zhang and Wei Shen and Siyuan Qiao and Yan Wang and Bo wang and Alan Yuille},
  year = {2018},
  eprint = {1811.11662},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1811.11662v1},
}