@inproceedings{30439,
  author       = {{Kauczor, C. and Fröhleke, Norbert}},
  booktitle    = {{2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551)}},
  publisher    = {{IEEE}},
  title        = {{{Inverter topologies for ultrasonic piezoelectric transducers with high mechanical Q-factor}}},
  doi          = {{10.1109/pesc.2004.1355265}},
  year         = {{2004}},
}

@inproceedings{30432,
  author       = {{Wetzel, H. and Siegel, A. and Njiende, H. and Fröhleke, Norbert and Böcker, Joachim}},
  booktitle    = {{11th International Power Electronics and Motion Control Conferences, Riga, Latvia}},
  location     = {{Riga, Latvia}},
  title        = {{{Low Voltage Asymmetrical Half-Bridge Converter with Integrated Magnetics}}},
  year         = {{2004}},
}

@inproceedings{30433,
  author       = {{Schulz, B. and Pottharst, A. and Fröhleke, N. and Böcker, Joachim}},
  booktitle    = {{11th International Power Electronics and Motion Control Conferences, Riga, Latvia}},
  location     = {{Riga, Latvia}},
  title        = {{{Modelling of Influences to a Linear-Drive-System}}},
  year         = {{2004}},
}

@inproceedings{30434,
  author       = {{Pottharst, A. and Baptist, K. and Schütze, O. and Böcker, Joachim and Fröhleke, N. and Dellnitz, M.}},
  booktitle    = {{11th International Power Electronics and Motion Control Conferences, Riga, Latvia}},
  location     = {{Riga, Latvia}},
  title        = {{{Operating Point Assignment of a Linear Motor Driven Vehicle Using Multiobjective Optimization Methods}}},
  year         = {{2004}},
}

@inproceedings{30435,
  author       = {{Li, R. and Pottharst, A. and Fröhleke, N. and Böcker, Joachim}},
  booktitle    = {{11th International Power Electronics and Motion Control Conferences, Riga, Latvia}},
  location     = {{Riga, Latvia}},
  title        = {{{Energy Storage Scheme for Rail-guided Shuttle using Ultracapacitor and Battery}}},
  year         = {{2004}},
}

@inproceedings{30438,
  author       = {{Li, R. and Pottharst, A. and Fröhleke, N. and Böcker, Joachim}},
  booktitle    = {{PESC 2004, Aachen, Germany}},
  location     = {{Aachen, Germany}},
  title        = {{{Analysis and Design of Improved Isolated Full-Bridge Bi-Directional DC-DC Converter}}},
  year         = {{2004}},
}

@inproceedings{30440,
  author       = {{Pottharst, A. and Schulz, B. and Böcker, Joachim}},
  booktitle    = {{SPS/IPC/DRIVES 2004, Nürnberg, Deutschland}},
  location     = {{Nürnberg, Deutschland}},
  title        = {{{Kommunikationssystem einer Anlage mit doppelt gespeistem Linearmotor}}},
  year         = {{2004}},
}

@inproceedings{30436,
  author       = {{Kauczor, C. and Schulte, T. and Grotstollen, H.}},
  booktitle    = {{ACTUATOR 2004, Bremen, Germany}},
  location     = {{Bremen, Germany}},
  title        = {{{Piezoelectric Transformer of Travelling Wave Type}}},
  year         = {{2004}},
}

@misc{17678,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 2: F–Mei}},
  editor       = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}},
  pages        = {{47--48}},
  publisher    = {{Spektrum Akademischer Verlag}},
  title        = {{{Frege, Friedrich Ludwig Gottlob}}},
  year         = {{2004}},
}

@misc{17679,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 2: F–Mei}},
  editor       = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}},
  pages        = {{107--108}},
  publisher    = {{Spektrum Akademischer Verlag}},
  title        = {{{Gödel, Kurt Friedrich}}},
  year         = {{2004}},
}

@misc{17680,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z}},
  editor       = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}},
  pages        = {{137--138}},
  publisher    = {{Spektrum Akademischer Verlag}},
  title        = {{{Peirce, Charles Sanders}}},
  year         = {{2004}},
}

@misc{17685,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z}},
  editor       = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}},
  pages        = {{492--493}},
  publisher    = {{Spektrum Akademischer Verlag}},
  title        = {{{Zermelo, Ernst Friedrich Ferdinand}}},
  year         = {{2004}},
}

@misc{17682,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z}},
  editor       = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}},
  pages        = {{387--388}},
  publisher    = {{Spektrum Akademischer Verlag}},
  title        = {{{van der Waerden, Bartel Leendert}}},
  year         = {{2004}},
}

@misc{17683,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z}},
  editor       = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}},
  pages        = {{449}},
  publisher    = {{Spektrum Akademischer Verlag}},
  title        = {{{Whitehead, Alfred North}}},
  year         = {{2004}},
}

@misc{17681,
  author       = {{Peckhaus, Volker}},
  booktitle    = {{Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z}},
  editor       = {{Hoffmann, Dieter and Laitko, Hubert and Müller-Wille, Staffan}},
  pages        = {{348}},
  publisher    = {{Spektrum Akademischer Verlag}},
  title        = {{{Tarski, Alfred}}},
  year         = {{2004}},
}

@phdthesis{30442,
  author       = {{Yang, Bo}},
  isbn         = {{978-3-8322-3380-8}},
  title        = {{{Regelung der Längs- und Vertikalbewegung des Linearmotors für ein vollaktives spurgeführtes Bahnfahrzeug}}},
  year         = {{2004}},
}

@phdthesis{30441,
  author       = {{Schulte, T.}},
  isbn         = {{978-3-18-336321-6}},
  title        = {{{Stromrichter- und Regelungskonzepte für Ultraschall-Wanderwellenmotoren}}},
  year         = {{2004}},
}

@inbook{32214,
  author       = {{Ptashnyk, Stefaniya}},
  booktitle    = {{Sprachkontakte in Mitteleuropa}},
  editor       = {{Kątny , Andrzej}},
  pages        = {{157–174}},
  title        = {{{Zur Konstruktion des Nationalitätenkonflikts im Diskurs (am Beispiel Lemberger Zeitun-gen vom Jahre 1897)}}},
  year         = {{2004}},
}

@book{34392,
  editor       = {{Block, Iris and   Kruse, Norbert  }},
  title        = {{{Lernbeobachtungen – Lerndiagnosen. Grundschulunterricht}}},
  volume       = {{11}},
  year         = {{2004}},
}

@article{34379,
  author       = {{Block, Iris and Kruse , Norbert }},
  journal      = {{Lernbeobachtungen und Lerndiagnosen. Grundschulunterricht}},
  number       = {{11}},
  pages        = {{2--3}},
  title        = {{{Beobachten als Aufgabe des Unterrichts}}},
  year         = {{2004}},
}