@article{CTT100644973,
  author = {S. Okubo and Tomonari Ueda and H. Ohta and Weimin Zhang and T. Sakurai and Nozomi Onishi and Masaki Azuma and Yuichi Shimakawa and Hiroki Nakano and T. Sakai},
  title = {Dzyaloshinsky-Moriya interaction and field-induced magnetic order in an antiferromagnetic honeycomb lattice compound Bi3Mn4O12(NO3) studied by high-field electron spin resonance},
  journal = {PHYSICAL REVIEW B},
  year = 2012,
}

@article{CTT100598716,
  author = {M. Fujisawa and K. Shiraki and S. Okubo and H. Ohta and M. Yoshida and H. Tanaka and T. Sakai},
  title = {Dzyaloshinsky-Moriya interaction in the S=1/2 quasi one-dimensional antiferromagnet Cu<sub>2</sub>Cl<sub>4</sub>•H<sub>8</sub>C<sub>4</sub>SO<sub>2</sub> as determined via high frequency ESR},
  journal = {Phys. Rev. B},
  year = 2009,
}