@inproceedings{CTT100843509,
  author = {Hiroki Katsumata and Satoshi Tayu},
  title = {On Three-Directional Orthogonal Ray Cacti},
  booktitle = {IPSJ SIG Technical Report},
  year = 2020,
}

@inproceedings{CTT100790790,
  author = {Hiroki Katsumata and Satoshi Tayu and Shuichi Ueno},
  title = {On the Orthogonal Ray Cacti},
  booktitle = {Proceedings of the 2018 IEICE Society Conference},
  year = 2018,
}

@inproceedings{CTT100790787,
  author = {Hiroki Katsumata and Satoshi Tayu and Shuichi UENO},
  title = {On the Complexity of Finding a Largest Common Subtree of Trees},
  booktitle = {Lecture Notes in Computer Science},
  year = 2017,
}

@inproceedings{CTT100749442,
  author = {Hiroki Katsumata and Satoshi Tayu and Shuichi UENO},
  title = {A Note on the Largest Common Subgraph Problem},
  booktitle = {Proceedings of the 2016 IEICE General Conference},
  year = 2017,
}

@inproceedings{CTT100749434,
  author = {Hiroki Katsumata and Satoshi Tayu and Shuichi UENO},
  title = {On the Complexity of Finding a Largest Common Subtree of Trees},
  booktitle = {Technical Report of the IEICE},
  year = 2016,
}