@article{CTT100715823,
  author = {Kei Suzuki and Philipp Gubler and Makoto Oka},
  title = {D meson mass increase by restoration of chiral symmetry in nuclear matter},
  journal = {Physical Review C},
  year = 2016,
}

@article{CTT100715822,
  author = {Philipp Gubler and Koichi Hattori and Su Houng Lee and Makoto Oka and Sho Ozaki and Kei Suzuki},
  title = {D mesons in a magnetic field},
  journal = {Physical Review D},
  year = 2016,
}

@article{CTT100715824,
  author = {Kei Suzuki and Philipp Gubler and Makoto Oka},
  title = {D meson properties in nuclear medium from QCD sum rules},
  journal = {JPS Conf. Proc.},
  year = 2015,
}