@article{CTT100715827,
  author = {Hungchong Kim and Myung-Ki Cheoun and Daisuke Jido and Makoto Oka},
  title = {Testing the tetraquark structure for the X resonances in low-lying region},
  journal = {Eur. Phys. J. A},
  year = 2016,
}

@article{CTT100598868,
  author = {Philipp Gubler and Daisuke Jido and Toru Kojo and Tetsuo Nishikawa and Makoto Oka},
  title = {Possible quantum numbers of the pentaquark \Theta^+(1540) in QCD sum rules},
  journal = {Physical Review},
  year = 2009,
}

@article{CTT100598872,
  author = {Philipp Gubler and Daisuke Jido and Toru Kojo and Tetsuo Nishikawa and Makoto Oka},
  title = {Spin-3/2 Pentaquark in QCD Sum Rules},
  journal = {Physical Review},
  year = 2009,
}

@inproceedings{CTT100605249,
  author = {Philipp Gubler and Daisuke Jido and Toru Kojo and Tetsuo Nishikawa and Makoto Oka},
  title = {S=+1 pentaquarks in QCD sum rules},
  booktitle = {Nuclear Physics},
  year = 2010,
}

@inproceedings{CTT100600790,
  author = {P.Gubler and M.Oka and D.Jido and T.Kojo and T.Nishikawa},
  title = {Spin-3/2 Pentaquark in QCD Sum Rules},
  booktitle = {Strangeness in Nuclear and Hadron Systems},
  year = 2010,
}

@inproceedings{CTT100621247,
  author = {Philipp Gubler and Daisuke Jido and Toru Kojo and Tetsuo Nishikawa and Makoto Oka},
  title = {Possible quantum numbers of Theta(1540)+ in QCD sum rules},
  booktitle = {Prog.Theor.Phys.Suppl.},
  year = 2010,
}

@inproceedings{CTT100621255,
  author = {Philipp Gubler and Daisuke Jido and Toru Kojo and Tetsuo Nishikawa and Makoto Oka},
  title = {S = +1 pentaquarks in QCD sum rules},
  booktitle = {Proceedings of Science},
  year = 2009,
}