@article{CTT100608957,
  author = {K. Nakahara and S. Akasaka and H. Yuji and K. Tamura and T. Fujii and Y. Nishimoto and D. Takamizu and A. Sasaki and T. Tanabe and H. Takasu and H. Amaike and T. Onuma and S. F. Chichibu and A. Tsukazaki and A. Ohtomo and M. Kawasaki},
  title = {Nitrogen doped Mg<sub>x</sub>Zn<sub>1-x</sub>O/ZnO single heterostructure ultraviolet light-emitting diodes on ZnO substrates},
  journal = {Applied Physics Letters},
  year = 2010,
}

@article{CTT100608959,
  author = {Y. Nishimoto and K. Nakahara and D. Takamizu and A. Sasaki and K. Tamura and S. Akasaka and H. Yuji and T. Fujii and T. Tanabe and H. Takasu and A. Tsukazaki and A. Ohtomo and T. Onuma and S. F. Chichibu and M. Kawasaki},
  title = {Plasma-assisted molecular beam epitaxy of high optical quality MgZnO films on Zn-polar ZnO substrates},
  journal = {Applied Physics Express},
  year = 2008,
}