@inproceedings{CTT100749433,
  author = {Yuuta Inaba and Satoshi Tayu and Shuichi UENO},
  title = {A 3/2-Approximation Algorithm for the Bipartite Dense Subgraph Problem on Bipartite Permutation Graphs},
  booktitle = {Technical Report of the IEICE},
  year = 2016,
}

@inproceedings{CTT100723467,
  author = {Yuuta Inaba and Satoshi Tayu and Shuichi UENO},
  title = {A 3/2-Approximation Algorithm for the Bipartite Dense Subgraph Problem on Bipartite Permutation Graphs},
  booktitle = {Proceedings of the 2016 IEICE General Conference},
  year = 2016,
}

@inproceedings{CTT100723459,
  author = {Yuuta Inaba and Satoshi Tayu and Shuichi Ueno},
  title = {A Note on the Bipartite Dense Subgraph Problem},
  booktitle = {Proceedings of the 2015 IEICE Society Conference},
  year = 2015,
}