@unpublished{FeldmannGeppertRoessler1999,
  author  = {Raimund Feldmann and Birgit Geppert and Frank R{\"o}{\"s}ler},
  title   = {Towards an Experimental Evaluation of SDL-Pattern based Protocol Design},
  institution = {Fachbereich Informatik},
  series    = {Sonderforschungsbereich 501},
  number    = {1998,4},
  year    = {1999}
}