@Incollection{benz2010academic,
  author = {Benz, Dominik and Hotho, Andreas and Jäschke, Robert and Stumme, Gerd and Halle, Axel and Gerlach Sanches Lima, Angela and Steenweg, Helge and Stefani, Sven},
  title  = {Academic Publication Management with PUMA – Collect, Organize and Share Publications},

  year   = {2010},
  number = {},
  url    = {http://dx.doi.org/10.1007/978-3-642-15464-5_46},
  doi = {10.1007/978-3-642-15464-5_46},
  const  = {\ text}
}
@Book{knappen2009schnell,
  author = {Knappen, Jörg},
  title  = {Schnell ans Ziel mit LaTeX},

  year   = {2009},
  number = {},
  url    = {},

  const  = {\ text}
}
@Article{wegener1993bottomupheapsort,
  author = {Wegener, Ingo},
  title  = {BOTTOM-UP-HEAPSORT, a new variant of HEAPSORT beating, on an average, QUICKSORT (if n is not very small)},
  journal = {Theoretical Computer Science},
  year   = {1993},
  number = {1},
  url    = {},

  const  = {\ text}
}
@Article{356594,
  author = {Martin, W. A.},
  title  = {Sorting},
  journal = {ACM Comput. Surv.},
  year   = {1971},
  number = {4},
  url    = {http://portal.acm.org/citation.cfm?id=356593.356594&coll=Portal&dl=GUIDE&CFID=89172762&CFTOKEN=95662085},
  doi = {10.1145/356593.356594},
  const  = {\ text}
}
@Article{Hoare1961,
  author = {Hoare, C. A. R.},
  title  = {Algorithm 64: Quicksort.},
  journal = {Commun. ACM},
  year   = {1961},
  number = {7},
  url    = {http://dblp.uni-trier.de/db/journals/cacm/cacm4.html#Hoare61b},

  const  = {\ text}
}