@article{HagemannGeittner1990, author = {Hagemann, Hans-J{\"u}rgen and Geittner, P.}, title = {PCVD hybrid technology for single mode fibres. Hagemann, H. J.; Geittner, P.}, series = {Proceedings : papers presented at: the 8th Annual European Fibre Optic Communications and Local Area Networks Exposition}, journal = {Proceedings : papers presented at: the 8th Annual European Fibre Optic Communications and Local Area Networks Exposition}, pages = {67 -- 72}, year = {1990}, language = {en} } @article{HagemannOBryan1987, author = {Hagemann, Hans-J{\"u}rgen and O´Bryan, H. M.}, title = {Grain boundary and surface segragation of Ba-Ti-O-Phases in rutile. O´Bryan, H. M.; Hagemann, H. J.}, series = {Journal of the American Ceramic Society. 70 (1987)}, journal = {Journal of the American Ceramic Society. 70 (1987)}, isbn = {0002-7820}, pages = {274 -- 278}, year = {1987}, language = {en} } @article{HagemannBachmannLadeetal.1994, author = {Hagemann, Hans-J{\"u}rgen and Bachmann, P. K. and Lade, H. and Leers, D.}, title = {Influence of the gas phase on diamond deposition and diamond properties. Bachmann, P. K.; Hagemann, H.J.; Lade, H.; Leers, D.; Picht, F.; Wiechert, D. U.}, series = {Advanced materials '94 : proceedings of the NIRIM International Symposium on Advanced Materials '94, Tsukuba, Japan, March 13 - 17, 1994 / National Institute for Research in Inorganic Materials. Ed. by M. Kamo}, journal = {Advanced materials '94 : proceedings of the NIRIM International Symposium on Advanced Materials '94, Tsukuba, Japan, March 13 - 17, 1994 / National Institute for Research in Inorganic Materials. Ed. by M. Kamo}, publisher = {International Communications Specialists, Inc.}, address = {Tokyo}, pages = {115 -- 120}, year = {1994}, language = {en} } @book{Hagemann1980, author = {Hagemann, Hans-J{\"u}rgen}, title = {Akzeptorionen in BaTiO3 und SrTiO3 und ihre Auswirkungen auf die Eigenschaften von Titanatkeramiken}, pages = {IX, 145 S. : zahlr. graph. Darst.}, year = {1980}, language = {de} } @article{HagemannIhrig1980, author = {Hagemann, Hans-J{\"u}rgen and Ihrig, H.}, title = {BaTiO3 dotiert mit 3d-Ionen: Valenzen, Leerstellen und ihre Auswirkungen. Hagemann, H. J.; Ihrig, H.}, series = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 3 (1980)}, journal = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 3 (1980)}, pages = {249 -- 252}, year = {1980}, language = {de} } @article{HagemannGeittnerSchnittkeretal.1989, author = {Hagemann, Hans-J{\"u}rgen and Geittner, P. and Schnittker, W. and Warnier, J.}, title = {Abscheidegeschwindigkeiten und Prozeßausbeuten im PCVD-Verfahren. Geittner, P.; Hagemann, H. J.; Schnittker, W.; Warnier, J.; Weling, F.; Wilson, H.}, series = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 4 (1989)}, journal = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 4 (1989)}, pages = {140 -- 143}, year = {1989}, language = {de} } @article{Hagemann1989, author = {Hagemann, Hans-J{\"u}rgen}, title = {St{\"o}rstellengleichgewichte in eisendotierten Titanaten. Hagemann, H. J.}, series = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 4 (1989)}, journal = {Philips - Unsere Forschung in Deutschland / Hrsg.: Philips Forschungslaboratorium GmbH Aachen und Hamburg. 4 (1989)}, pages = {170 -- 172}, year = {1989}, language = {de} } @article{HagemannHeroGonser1980, author = {Hagemann, Hans-J{\"u}rgen and Hero, A. and Gonser, U.}, title = {The valence change of Fe in BaTiO3 studied by M{\"o}ßbauer effect and gravimetry. Hagemann, H. J.; Hero, A.; Gonser, U.}, series = {Physica Status Solidi (A) - Applied Research. 61 (1980)}, journal = {Physica Status Solidi (A) - Applied Research. 61 (1980)}, isbn = {0031-8965}, pages = {63 -- 72}, year = {1980}, language = {en} } @article{HagemannHennings1981, author = {Hagemann, Hans-J{\"u}rgen and Hennings, D.}, title = {Reversible Weight change of acceptor-doped BaTiO3. Hagemann, H. J.; Hennings, D.}, series = {Journal of the American Ceramic Society. 64 (1981)}, journal = {Journal of the American Ceramic Society. 64 (1981)}, isbn = {0002-7820}, pages = {590 -- 594}, year = {1981}, language = {en} } @article{HagemannHenningsWernicke1984, author = {Hagemann, Hans-J{\"u}rgen and Hennings, D. and Wernicke, R.}, title = {Ceramic multilayer capacitors. Hagemann, H. J.; Hennings, D.; Wernicke, R.}, series = {Philips' technical review / Philips' Gloeilampenfabrieken. Philips' Gloeilampenfabrieken . 41 (1984)}, journal = {Philips' technical review / Philips' Gloeilampenfabrieken. Philips' Gloeilampenfabrieken . 41 (1984)}, isbn = {0031-7926}, pages = {89 -- 98}, year = {1984}, language = {en} } @article{HagemannHenningsWernicke1984, author = {Hagemann, Hans-J{\"u}rgen and Hennings, D. and Wernicke, R.}, title = {Keramische Vielschichtkondensatoren. Hagemann, H. J.; Hennings, D.; Wernicke, R.}, series = {Sprechsaal : internat. ceramics \& glass magazine. 117 (1984)}, journal = {Sprechsaal : internat. ceramics \& glass magazine. 117 (1984)}, isbn = {0341-0439}, pages = {924 -- 931}, year = {1984}, language = {de} } @article{HagemannStumpeWagneretal.1985, author = {Hagemann, Hans-J{\"u}rgen and Stumpe, R. and Wagner, D. and B{\"a}uerle, D.}, title = {The influence of contact effects on the dielectric behavior of diffuse phase transitions. Stumpe, R.; Wagner, D.; B{\"a}uerle, D.; Hagemann, H. J.}, series = {Ferroelectrics : the international journal devoted to the theoretical, experimental, and applied aspects of ferroelectrics and related materials / Letters section. 4 (1985)}, journal = {Ferroelectrics : the international journal devoted to the theoretical, experimental, and applied aspects of ferroelectrics and related materials / Letters section. 4 (1985)}, isbn = {0731-5171}, pages = {143 -- 147}, year = {1985}, language = {en} } @article{HagemannGeittnerWarnieretal.1985, author = {Hagemann, Hans-J{\"u}rgen and Geittner, P. and Warnier, J. and Weling, F.}, title = {Reduction of geometric taper losses in the PCVD process. Geittner, P.; Hagemann, H. J.; Warnier, J.; Weling, F.; Wilson, H.}, series = {Electronics letters : an intern. publication / The Institution of Electrical Engineers. 21 (1985), H. 13}, journal = {Electronics letters : an intern. publication / The Institution of Electrical Engineers. 21 (1985), H. 13}, isbn = {0013-5194}, pages = {870 -- 871}, year = {1985}, language = {en} } @article{RitzStender2006, author = {Ritz, Thomas and Stender, Michael}, title = {Modeling of B2B mobile commerce processes}, series = {International Journal of Production Economics}, volume = {101}, journal = {International Journal of Production Economics}, number = {1}, issn = {0925-5273}, doi = {10.1016/j.ijpe.2005.05.017}, pages = {128 -- 139}, year = {2006}, language = {en} } @book{LohrDeppe2001, author = {Lohr, J{\"u}rgen and Deppe, Andreas}, title = {Der CMS-Guide : Content-Management-Systeme: Erfolgsfaktoren, Gesch{\"a}ftsmodelle, Produkt{\"u}bersicht}, publisher = {Vieweg}, address = {Braunschweig [u.a.]}, isbn = {3-528-05768-8}, pages = {XV, 201 S. : graph. Darst.}, year = {2001}, language = {de} } @book{Lohr1998, author = {Lohr, J{\"u}rgen}, title = {Probleme und L{\"o}sungen von Multimedia-Diensten und interaktiven Kommunikationsdiensten im nationalen und internationalen Umfeld}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-356410-6}, pages = {X, 277 S.: graph. Darst.}, year = {1998}, language = {de} } @article{Heuermann2006, author = {Heuermann, Holger}, title = {Verringerung des Phasenrauschens von Oszillatoren durch Dual-Mode-Resonatoren}, series = {HF-Report. 20 (2006), H. 5-6}, journal = {HF-Report. 20 (2006), H. 5-6}, isbn = {1431-827X}, pages = {43 -- 48}, year = {2006}, language = {en} } @article{HeuermannPetersSchmitzetal.2005, author = {Heuermann, Holger and Peters, N. and Schmitz, T. and Sadeghfam, Arash}, title = {Concept of Balanced Antennas with Load-Invariant Base Impedance Using a Two Element LC-Coupler. Peters, N., Schmitz, Th., Sadeghfam, A., Heuermann, H.}, series = {Proceedings of the European microwave association : journal of the European microwave association}, journal = {Proceedings of the European microwave association : journal of the European microwave association}, publisher = {PLUS}, address = {Pisa}, pages = {117 -- 122}, year = {2005}, language = {en} } @article{Hoffmann2008, author = {Hoffmann, Ulrich}, title = {Neue Wege in die Hochschule - Beispiel des berufsbegleitenden Studienganges Prozesstechnik der FH Aachen und der Rhein-Erft Akademie}, series = {HIS: Forum Hochschule. 2008 (2008), H. F14}, journal = {HIS: Forum Hochschule. 2008 (2008), H. F14}, isbn = {1863-5563}, pages = {130 -- 138}, year = {2008}, language = {de} } @article{ZastrowRieder1980, author = {Zastrow, Udo and Rieder, G.}, title = {Bracketing eigenvalues of an oscillating elastic body by integral equations}, series = {Bracketing of eigenfrequencies of continous structures : Euromech Colloquium, no. 112, M{\´a}traf{\"u}red (Hungary), 21 - 23 February, 1979 / ed. by {\`A}. Bosznay}, journal = {Bracketing of eigenfrequencies of continous structures : Euromech Colloquium, no. 112, M{\´a}traf{\"u}red (Hungary), 21 - 23 February, 1979 / ed. by {\`A}. Bosznay}, publisher = {Akad. Kiad{\´o}}, address = {Budapest}, isbn = {963-05-2625-5}, pages = {421 -- 434}, year = {1980}, language = {en} }