@book{Juergensen1998,
  author    = {J{\"u}rgensen, Helmut},
  title     = {Towards computer science},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik},
  volume    = {1998, 03},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik},
  publisher = {Univ.},
  address   = {Potsdam},
  issn      = {0946-7580},
  pages     = {10 Bl. : Ill.},
  year      = {1998},
  language  = {en}
}
@book{MarquesdeCarvalhoJuergensen1998,
  author    = {Marques de Carvalho, Jackson W. and J{\"u}rgensen, Helmut},
  title     = {Dynamic multi-purpose mathematics notation},
  series = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik},
  volume    = {1998, 04},
  journal   = {Preprint / Universit{\"a}t Potsdam, Institut f{\"u}r Informatik},
  publisher = {Univ.},
  address   = {Potsdam},
  issn      = {0946-7580},
  pages     = {14 Bl. : graph. Darst.},
  year      = {1998},
  language  = {en}
}
@article{BogueGoesselJuergensenetal.1998,
  author    = {Bogue, Ted and G{\"o}ssel, Michael and J{\"u}rgensen, Helmut and Zorian, Yervant},
  title     = {Built-in self-Test with an alternating output},
  isbn      = {0-8186-8359-7},
  year      = {1998},
  language  = {en}
}