@incollection{KamstiesHorkoffDalpiaz2018,
  author    = {Kamsties, Erik and Horkoff, Jennifer and Dalpiaz, Fabiano},
  title     = {Preface},
  series = {Requirements engineering: foundation for software quality : 24th International Working Conference, REFSQ 2018, Utrecht, The Netherlands, March 19-22, 2018 : proceedings},
  publisher = {Springer International Publishing},
  address   = {Cham},
  pages     = {5 -- 6},
  year      = {2018},
  language  = {en}
}
@article{van der VlugtKamstiesTerfloth2018,
  author    = {van der Vlugt, D. and Kamsties, Erik and Terfloth, A.},
  title     = {Webbasiert und kollaborativ: ein Requirements Editor auf Basis von ReqIF},
  series = {Softwaretechnik-Trends},
  volume    = {37 (2018)},
  number    = {2},
  issn      = {0720-8928},
  year      = {2018},
  language  = {de}
}