@article{whatmakesitdifficulttounderstanda,
  title = {What Makes it Difficult to Understand a Scientific Literature?},
  author = {Mengyun Cao and Jiao Tian and Dezhi Cheng and Jin Liu and Xiaoping Sun},
  year = {2015},
  eprint = {1512.01409},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1512.01409v1},
}