* Phosphorene: An Unexplored 2D Semiconductor with a High Hole Mobility\\
Han Liu, Adam T. Neal, Zhen Zhu, Zhe Luo, Xianfan Xu, David Tomanek,
and Peide D. Ye,\\
ACSnano **8**, 4033 (2014).

  * Black phosphorus field-effect transistors\\
Likai Li, Yijun Yu, Guo Jun Ye, Qingqin Ge, Xuedong Ou, HuaWu, Donglai
Feng, Xian Hui Chen and Yuanbo Zhang,\\
Nature Nanotech. **9**, 372 (2014).