A Polynomial-Time Algorithm for Outerplanar Diameter Improvement. Cohen, N., Gonçalves, D., Kim, E., Paul, C., Sau, I., Thilikos, D. M., & Weller, M. In CSR, volume 9139, of Lecture Notes in Computer Science, pages 123–142, 2015. Springer.
bibtex   
@inproceedings{DBLP:conf/csr/Cohen0KPSTW15,
  author       = {Nathann Cohen and
                  Daniel Gon{\c{c}}alves and
                  Eunjung Kim and
                  Christophe Paul and
                  Ignasi Sau and
                  Dimitrios M. Thilikos and
                  Mathias Weller},
  title        = {A Polynomial-Time Algorithm for Outerplanar Diameter Improvement},
  booktitle    = {{CSR}},
  series       = {Lecture Notes in Computer Science},
  volume       = {9139},
  pages        = {123--142},
  publisher    = {Springer},
  year         = {2015}
}

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