BibTeX import and ß

[zuphilip]

The BibTeX import with

@InProceedings{brunsch_et_al:LIPIcs:2015:4912,
  author =  {Tobias Brunsch and Anna Gro{\ss}wendt and Heiko R{\"o}glin},
  title =   {{Solving Totally Unimodular LPs with the Shadow Vertex Algorithm}},
  booktitle =   {32nd International Symposium on Theoretical Aspects of Computer Science (STACS 2015)},
  pages =   {171--183},
  series =  {Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =    {978-3-939897-78-1},
  ISSN =    {1868-8969},
  year =    {2015},
  volume =  {30},
  editor =  {Ernst W. Mayr and Nicolas Ollinger},
  publisher =   {Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address = {Dagstuhl, Germany},
  URL =     {http://drops.dagstuhl.de/opus/volltexte/2015/4912},
  URN =     {urn:nbn:de:0030-drops-49125},
  doi =     {http://dx.doi.org/10.4230/LIPIcs.STACS.2015.171},
  annote =  {Keywords: linear optimization, simplex algorithm, shadow vertex method}
}

will result in the author swendt, Anna Gro\s.