@article{CTT100868768,
  author = {Yoichi Murakami and Kenji Kamada},
  title = {Kinetics of Photon Upconversion by Triplet-Triplet Annihilation: A Comprehensive Tutorial},
  journal = {Physical Chemistry Chemical Physics},
  year = 2021,
}

@inproceedings{CTT100818597,
  author = {Martin Vacha and Kentaro Yomogita and Junxiang Zhang and Riyota Mizutani and Kenji Kamada and Seth Marder and Shuzo Hirata},
  title = {Donor-acceptor molecules showing photon upconversion emission by stepwise two-photon absorption},
  booktitle = {Abstracts},
  year = 2019,
}