@book{BenknerDavid1999,
  author    = {Benkner, Thorsten and David, Klaus},
  title     = {Digitale Mobilfunksysteme : Grundlagen und aktuelle Systeme. - 2., aktualis. u. erw. Aufl.},
  publisher = {Teubner},
  address   = {Stuttgart},
  isbn      = {3-519-16181-8},
  pages     = {XIII, 457 S.. : graph. Darst.},
  year      = {1999},
  language  = {en}
}
@article{Benkner1999,
  author    = {Benkner, Thorsten},
  title     = {Wireless ATM - Broadband Mobile Radio Systems},
  series = {Multiaccess, mobility and teletraffic for wireless communications. Workshop on Multiaccess, Mobility and Teletraffic for Wireless Communications <4, 1998, Washington, DC>},
  journal   = {Multiaccess, mobility and teletraffic for wireless communications. Workshop on Multiaccess, Mobility and Teletraffic for Wireless Communications <4, 1998, Washington, DC>},
  publisher = {Kluwer},
  address   = {Boston [u.a.]},
  pages     = {155 -- 170},
  year      = {1999},
  language  = {en}
}
@article{Heuermann1999,
  author    = {Heuermann, Holger},
  title     = {Calibration procedures with series impedances and unknown lines simplify on-wafer measurements},
  series = {IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 47 (1999), H. 1},
  journal   = {IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 47 (1999), H. 1},
  isbn      = {0018-9480},
  pages     = {1 -- 5},
  year      = {1999},
  language  = {en}
}
@article{Siepmann1999,
  author    = {Siepmann, Thomas},
  title     = {Exploitation Plan of the TELEflow Project},
  address   = {Brussels},
  year      = {1999},
  language  = {en}
}
@article{FredebeulKrein1999,
  author    = {Fredebeul-Krein, Markus},
  title     = {The case for a more binding WTO agreement on regulatory principles in telecommunication markets},
  series = {Telecommunications policy. vol. 23 (1999), H. afl. 9},
  journal   = {Telecommunications policy. vol. 23 (1999), H. afl. 9},
  isbn      = {0308-5961},
  pages     = {625 -- 644},
  year      = {1999},
  language  = {en}
}
@article{Jacobs1999,
  author    = {Jacobs, Stephan},
  title     = {The Teamwork Approach in Requirements Engineering},
  series = {The nature of requirements engineering / Matthias Jarke ... (Hrsg.)},
  journal   = {The nature of requirements engineering / Matthias Jarke ... (Hrsg.)},
  publisher = {Shaker},
  address   = {Aachen},
  isbn      = {3-8265-6174-0},
  pages     = {XVIII, 410 S. : Ill., graph. Darst.},
  year      = {1999},
  language  = {en}
}
@article{Jacobs1999,
  author    = {Jacobs, Stephan},
  title     = {Introducing Measurable Requirements: A Case Study},
  series = {Proceedings : June 7 - 11, 1999, University of Limerick, Limerick, Ireland / sponsored by IEEE Computer Society Technical Council on Software Engineering. In cooperation with ACM SIGSOFT},
  journal   = {Proceedings : June 7 - 11, 1999, University of Limerick, Limerick, Ireland / sponsored by IEEE Computer Society Technical Council on Software Engineering. In cooperation with ACM SIGSOFT},
  isbn      = {0769501885},
  year      = {1999},
  language  = {en}
}
@book{JanzEblingGottschalketal.1999,
  author    = {Janz, Norbert and Ebling, G{\"u}nther and Gottschalk, Sandra and Niggemann, Hiltrud},
  title     = {2nd Community Innovation Survey. Final Report. Report prepared for Eurostat / Ebling, G. , S. Gottschalk, N. Janz und H. Niggemann},
  publisher = {ZEW Zentrum f{\"u}r Europ{\"a}ische Wirtschaftsforschung},
  address   = {Mannheim},
  year      = {1999},
  language  = {en}
}
@book{JanzEbling1999,
  author    = {Janz, Norbert and Ebling, G{\"u}nther},
  title     = {Export and Innovation Activities in the German Service Sector. Empirical Evidence at the Firm Level / Ebling, G.. und N. Janz},
  publisher = {ZEW Zentrum f{\"u}r Europ{\"a}ische Wirtschaftsf{\"o}rderung},
  address   = {Mannheim},
  year      = {1999},
  language  = {en}
}
@book{JanzEblingGottschalketal.1999,
  author    = {Janz, Norbert and Ebling, G{\"u}nther and Gottschalk, Sandra and Niggemann, Hiltrud},
  title     = {2nd Community Innovation Survey. 2nd Interim Report. Report prepared for Eurostat / Ebling, G. , S. Gottschalk, N. Janz und H. Niggemann},
  publisher = {ZEW Zentrum f{\"u}r Europ{\"a}ische Wirtschaftsforschung},
  address   = {Mannheim},
  year      = {1999},
  language  = {en}
}