sub.bib

@Misc{TokyoMetro:17, 
  author = {H.-Y. Wu and S. Takahashi}, 
  title = {A MIP Dataset for the Layout of Tokyo Metro},
  Year = {2017}
}

@phdthesis{phdwu:13,
        author = {H.-Y. Wu},
        title = {Constrained Optimization Approaches to Customizing Layout and Annotation for Metro Maps},
        school = {The University of Tokyo},
        year = {2013},
        month = {March},
        address = {Chiba, Japan},
}