@InProceedings{dudenhefner:LIPIcs.FSCD.2020.9,
  author =	{Dudenhefner, Andrej},
  title =	{{Undecidability of Semi-Unification on a Napkin}},
  booktitle =	{5th International Conference on Formal Structures for Computation and Deduction (FSCD 2020)},
  pages =	{9:1--9:16},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-155-9},
  ISSN =	{1868-8969},
  year =	{2020},
  volume =	{167},
  editor =	{Ariola, Zena M.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.FSCD.2020.9},
  URN =		{urn:nbn:de:0030-drops-123311},
  doi =		{10.4230/LIPIcs.FSCD.2020.9},
  annote =	{Keywords: undecidability, semi-unification, mechanization}
}