@InProceedings{karpov_et_al:LIPIcs.IPEC.2017.24,
  author =	{Karpov, Nikolai and Pilipczuk, Marcin and Zych-Pawlewicz, Anna},
  title =	{{An Exponential Lower Bound for Cut Sparsifiers in Planar Graphs}},
  booktitle =	{12th International Symposium on Parameterized and Exact Computation (IPEC 2017)},
  pages =	{24:1--24:11},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-051-4},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{89},
  editor =	{Lokshtanov, Daniel and Nishimura, Naomi},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.IPEC.2017.24},
  URN =		{urn:nbn:de:0030-drops-85603},
  doi =		{10.4230/LIPIcs.IPEC.2017.24},
  annote =	{Keywords: mimicking networks, planar graphs}
}