@InProceedings{grier_et_al:LIPIcs.CCC.2018.19,
  author =	{Grier, Daniel and Schaeffer, Luke},
  title =	{{New Hardness Results for the Permanent Using Linear Optics}},
  booktitle =	{33rd Computational Complexity Conference (CCC 2018)},
  pages =	{19:1--19:29},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-069-9},
  ISSN =	{1868-8969},
  year =	{2018},
  volume =	{102},
  editor =	{Servedio, Rocco A.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CCC.2018.19},
  URN =		{urn:nbn:de:0030-drops-88702},
  doi =		{10.4230/LIPIcs.CCC.2018.19},
  annote =	{Keywords: Permanent, Linear optics, #P-hardness, Orthogonal matrices}
}