@article{CTT100609484,
  author = {X. Q. Zhang and Z. K. Tang and M. Kawasaki and A. Ohtomo and H. Koinuma},
  title = {Second harmonic generation in self-assembled ZnO microcrystallite thin films},
  journal = {Thin Solid Films},
  year = 2004,
}

@article{CTT100609485,
  author = {X. Q. Zhang and Z. Tang and M. Kawasaki and A. Ohtomo and H. Koinuma},
  title = {Optical gain in self-assembled ZnO microcrysallite thin films},
  journal = {Journal of Crystal Growth},
  year = 2003,
}

@article{CTT100609483,
  author = {Xiqing Zhang and Z. K. Tang and M. Kawasaki and A. Ohtomo and H. Koinuma},
  title = {Resonant exciton second-harmonic generation in self-assembled ZnO microcrystallite thin films},
  journal = {Journal of Physics-Condensed Matter},
  year = 2003,
}