@book{FredebeulKrein1998,
  author    = {Fredebeul-Krein, Markus},
  title     = {Marktzutrittsregulierungen im Handwerk und bei technischen Dienstleistungen : eine {\"o}konomische Analyse / Markus Fredebeul-Krein ; Angela Sch{\"u}rfeld},
  publisher = {Inst. f{\"u}r Wirtschaftspolitik an der Univ. K{\"o}ln},
  address   = {K{\"o}ln},
  isbn      = {3-933812-00-3},
  pages     = {VII, 182 S. : graph. Darst.},
  year      = {1998},
  language  = {de}
}
@book{RitzBenzStender2003,
  author    = {Ritz, Thomas and Benz, Axel and Stender, Michael},
  title     = {Marktstudie mobile CRM-Systeme},
  publisher = {Fraunhofer-IRB-Verl.},
  address   = {Stuttgart},
  isbn      = {3-8167-6361-8},
  pages     = {244 S. : Ill., graph. Darst.},
  year      = {2003},
  language  = {en}
}
@book{PietschHerzwurm2009,
  author    = {Pietsch, Wolfram and Herzwurm, Georg},
  title     = {Management von IT-Produkten : Gesch{\"a}ftsmodelle, Leitlinien und Werkzeugkasten f{\"u}r softwareintensive Systeme und Dienstleistungen / Herzwurm, Georg ; Pietsch, Wolfram},
  publisher = {Dpunkt-Verl},
  address   = {Heidelberg},
  isbn      = {978-3-89864-562-1},
  pages     = {XVII, 370 S. : graph. Darst.},
  year      = {2009},
  language  = {de}
}
@book{Huening2001,
  author    = {H{\"u}ning, Felix},
  title     = {Magnetische Eigenschaften niederdimensionaler Chrom-, Ruthenium- und Niobhalogenide},
  publisher = {Shaker},
  address   = {Aachen},
  isbn      = {3-8265-8551-8},
  pages     = {II, 122 S Ill., graph. Darst.},
  year      = {2001},
  language  = {en}
}
@book{GaiserPichler1996,
  author    = {Gaiser, Lorenz and Pichler, Georg},
  title     = {Lorenz Gaiser - Weg : [... anl{\"a}ßlich der Ausstellung von Lorenz Gaiser im Dezember 1996] / [vom Frankfurter Kunstverein ... hrsg. Text: Georg Pichler]},
  publisher = {Frankfurter Kunstverein},
  address   = {Frankfurt am Main},
  isbn      = {3-928762-67-2},
  pages     = {[30] Bl. : {\"u}berw.. Ill.},
  year      = {1996},
  language  = {de}
}
@book{SchubaSchubaReichletal.1998,
  author    = {Schuba, Marko and Schuba, Marko and Reichl, Peter and Schneider, Gaby},
  title     = {Lokale Netze - Skript zur Vorlesung an der RWTH Aachen / Spaniol, Otto,},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-86073-721-X},
  pages     = {138 S. : graph. Darst.},
  year      = {1998},
  language  = {de}
}
@book{HoffmannLindemann1998,
  author    = {Hoffmann, Christoph P. and Lindemann, Markus},
  title     = {Logistik und Electronic Commerce - LogEC : Arbeitsbericht},
  publisher = {mcm Inst.},
  address   = {St. Gallen},
  isbn      = {3-906979-00-8},
  pages     = {XX, 161 S. : graph. Darst.},
  year      = {1998},
  language  = {de}
}
@book{MaiSchumnyAlt1984,
  author    = {Mai, Herbert and Schumny, Harald and Alt, Helmut},
  title     = {Lineares Optimieren : Maximierung - Minimierung (Vieweg Programmbibliothek Mikrocomputer ; 14) / Helmut Alt ; Harald Schumny [Hrsg.]},
  publisher = {Vieweg + Teubner},
  address   = {Wiesbaden},
  isbn      = {978-3-663-14049-8 ; 978-3-528-04312-4},
  pages     = {VIII, 100 S.},
  year      = {1984},
  language  = {de}
}
@book{StaatHeitzerYanetal.2000,
  author    = {Staat, Manfred and Heitzer, M. and Yan, Ai-Min and Khoi, Vu Duc and Nguyen, Dang Hung and Valdoire, F. and Lahousse, A.},
  title     = {Limit Analysis of Defects},
  publisher = {Forschungszentrum J{\"u}lich},
  address   = {J{\"u}lich},
  issn      = {0944-2952},
  pages     = {89 S.},
  year      = {2000},
  language  = {en}
}
@book{YoshinobuSchoening2020,
  author    = {Yoshinobu, Tatsuo and Sch{\"o}ning, Michael Josef},
  title     = {Light-addressing and chemical imaging technologies for electrochemical sensing},
  editor    = {Yoshinobu, Tatsuo and Sch{\"o}ning, Michael Josef},
  publisher = {MDPI},
  address   = {Basel},
  isbn      = {978-3-03943-029-1},
  doi       = {10.3390/books978-3-03943-029-1},
  pages     = {122 Pages},
  year      = {2020},
  language  = {en}
}