R
[Rab08] Roman Rabinovich. Complexity Measures for Directed Graphs. Diplomarbeit, RWTH Aachen, Germany, August 2008. 
@mastersthesis{diplom08-Rab,
  author =              {Rabinovich, Roman},
  title =               {Complexity Measures for Directed Graphs},
  year =                {2008},
  month =               aug,
  school =              {RWTH Aachen, Germany},
  type =                {Diplomarbeit},
}
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