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@article{DBLP:journals/dam/OnoY23,
  author       = {Hirotaka Ono and
                  Hisato Yamanaka},
  title        = {An 8-approximation algorithm for L(2,1)-labeling of unit disk graphs},
  journal      = {Discret. Appl. Math.},
  volume       = {341},
  pages        = {93--101},
  year         = {2023},
  url          = {https://doi.org/10.1016/j.dam.2023.07.012},
  doi          = {10.1016/J.DAM.2023.07.012},
  timestamp    = {Fri, 29 Dec 2023 00:00:00 +0100},
  biburl       = {https://dblp.org/rec/journals/dam/OnoY23.bib},
  bibsource    = {dblp computer science bibliography, https://dblp.org}
}

@inproceedings{DBLP:conf/sofsem/OnoY19,
  author       = {Hirotaka Ono and
                  Hisato Yamanaka},
  editor       = {Barbara Catania and
                  Rastislav Kr{\'{a}}lovic and
                  Jerzy R. Nawrocki and
                  Giovanni Pighizzini},
  title        = {A 116/13-Approximation Algorithm for L(2, 1)-Labeling of Unit Disk
                  Graphs},
  booktitle    = {{SOFSEM} 2019: Theory and Practice of Computer Science - 45th International
                  Conference on Current Trends in Theory and Practice of Computer Science,
                  Nov{\'{y}} Smokovec, Slovakia, January 27-30, 2019, Proceedings},
  series       = {Lecture Notes in Computer Science},
  volume       = {11376},
  pages        = {379--391},
  publisher    = {Springer},
  year         = {2019},
  url          = {https://doi.org/10.1007/978-3-030-10801-4\_30},
  doi          = {10.1007/978-3-030-10801-4\_30},
  timestamp    = {Fri, 29 Dec 2023 00:00:00 +0100},
  biburl       = {https://dblp.org/rec/conf/sofsem/OnoY19.bib},
  bibsource    = {dblp computer science bibliography, https://dblp.org}
}