@TECHREPORT{kutvonen04b2b,
  AUTHOR = {Lea Kutvonen},
  TITLE = {{B2B middleware for managing process-aware
                 ecommunities}},
  INSTITUTION = {Department of Computer Science, University of
                 Helsinki},
  YEAR = {2004},
  NUMBER = {C-2004-63}
}

@TECHREPORT{kutvonen04managing,
  AUTHOR = {Lea Kutvonen},
  TITLE = {{Managing collaboration and interoperability of
                 dynamic business networks}},
  INSTITUTION = {Department of Computer Science, University of
                 Helsinki},
  YEAR = {2004},
  NUMBER = {C-2004-62}
}

@TECHREPORT{haataja03usingbpel,
  AUTHOR = {Juha Haataja and Renne Tergujeff},
  TITLE = {{Using BPEL4WS for Supply-Chain Integration -
                 Experiences and Evaluation}},
  INSTITUTION = {Department of Computer Science, University of Helsinki
                 and VTT},
  YEAR = {2004},
  NUMBER = {C-2003-74}
}

@TECHREPORT{ponka04security,
  AUTHOR = {Ilja Ponka},
  TITLE = {{Web services security: an overview}},
  INSTITUTION = {Department of Computer Science, University of
                 Helsinki},
  YEAR = {2003},
  NUMBER = {C-2003-73}
}

@TECHREPORT{metso03suitability,
  AUTHOR = {Janne Metso},
  TITLE = {{Suitability of UDDI Registry for web-Pilarcos
                 Architecture - Performance Measurements}},
  INSTITUTION = {Department of Computer Science, University of
                 Helsinki},
  YEAR = {2003},
  NUMBER = {C-2003-72}
}