@TechReport{DraveKautzMichaelRumpe,
  author      = "Imke Drave and Oliver Kautz and Judith Michael and Bernhard Rumpe",
  title       = "Pre-Study on the Usefulness of Difference Operators for Modeling Languages in Software Development",
  institution = "RWTH Aachen",
  keywords    = "difference, semantic difference, syntactic difference, modeling, evolution, analysis",
  year        = "2020",
  number      = "AIB-2020-05",
  month       = may,
  url         = "http://aib.informatik.rwth-aachen.de/2020/2020-05.pdf",
}