@article{DT229,
  title =  {Phosphorene: An Unexplored 2D Semiconductor with
            a High Hole Mobility},
  author = {Liu, Han and Neal, Adam T. and Zhu, Zhen and Luo, Zhe
            and Xu, Xianfan and Tomanek, David and Ye, Peide D.},
  journal = {ACS Nano},
  volume = {8},
  number = {4},
  pages = {4033--4041},
  year = {2014},
  doi = {10.1021/nn501226z},
  url = {http://pubs.acs.org/doi/abs/10.1021/nn501226z}
}