K. Fleischer et al., “Atomic indium nanowires on Si(111): the (4 × 1)–(8 × 2) phase transition studied with reflectance anisotropy spectroscopy,” Applied Surface Science, vol. 234, pp. 302–306, 2004.

K. Seino, W. G. Schmidt, and F. Bechstedt, “Energetics of Si(001) Surfaces Exposed to Electric Fields and Charge Injection,” Physical Review Letters, vol. 93, no. 3, 2004.

M. Preuss, W. G. Schmidt, and F. Bechstedt, “Methyl Chloride Adsorption on Si(001)Electronic Structure,” The Journal of Physical Chemistry B, vol. 108, pp. 7809–7813, 2004.

K. Seino, W. G. Schmidt, and F. Bechstedt, “Organic modification of surface electronic properties:A first-principles study of uracil on Si(001),” Physical Review B, vol. 69, p. 245309, 2004.

W. G. Schmidt et al., “Calculation of surface optical properties: from qualitative understanding to quantitative predictions,” Thin Solid Films, vol. 455–456, pp. 764–771, 2004.

K. Seino and W. G. Schmidt, “Reflectance anisotropy of uracil covered Si(001) surfaces: Ab initio predictions,” Surface Science, vol. 548, pp. 183–186, 2004.

M. Preuss, W. G. Schmidt, K. Seino, J. Furthmüller, and F. Bechstedt, “Ground- and excited-state properties of DNA base molecules from plane-wave calculations using ultrasoft pseudopotentials,” Journal of Computational Chemistry, vol. 25, no. 1, pp. 112–122, 2004.

E. Ficara, Tran., Aus dem Italienischen ins Deutsche: F. D’Agostini, Che cosa significa essere una donna? Le basi ontologiche della differenza di genere tra analisi concettuale e teoria politica, vol. 29. 2004, pp. 42–60.

V. Peckhaus, “,Aber vielleicht kommt noch eine Zeit, wo auch meine Arbeiten wieder entdeckt und gelesen werde‘: Die gescheiterte Karriere des Ernst Zermelo,” in Mathematik im Fluß der Zeit. Tagung zur Geschichte der Mathematik in Attendorn/Neu-Listernohl (28.5. bis 1.6.2003), Attendorn/Neu-Listernohl, 2004, vol. 44, pp. 325–339.

V. Peckhaus, “Otto Friedrich Gruppe und die Logische Frage,” in Otto Friedrich Gruppe 1804–1876. Philosoph, Dichter, Philologe, vol. 3, L. Bernays, Ed. Freiburg i. Br.: Rombach Verlag, 2004, pp. 49–71.

V. Peckhaus, “Paradoxes in Göttingen,” in One Hundred Years of Russell’s Paradox. Mathematics, Logic, Philosophy, vol. 6, G. Link, Ed. Berlin/New York: de Gruyter, 2004, pp. 501–515.

V. Peckhaus, “Garantiert Widerspruchsfreiheit Existenz?,” in Was folgt? Themen zu Wessel, B. Christiansen and U. Scheffler, Eds. Berlin: Logos Verlag, 2004, pp. 111–127.

V. Peckhaus, “Calculus Ratiocinator vs. Characteristica Universalis? The Two Traditions in Logic, Revisted,” History and Philosophy of Logic (Special Issue in Honor of Ivor Grattan-Guinness, hg. v. John W. Dawson, Jr.), vol. 25, pp. 3–14, 2004.

V. Peckhaus, “Dignaga’s Logic of Invention,” in History of the Mathematical Sciences, I. Grattan-Guinness and B. S. Yadav, Eds. New Delhi: Hindustan Book Agency, 2004, pp. 97–107.

V. Peckhaus, “Schröder’s Logic,” in Handbook of the History of Logic, Bd. 3: The Rise of Modern Logic: From Leibniz to Frege, D. M. Gabbay and J. Woods, Eds. Amsterdam u. a.: Elsevier North Holland, 2004, pp. 557–609.

V. Peckhaus, “Scholz als Metaphysiker,” in Heinrich Scholz: Logiker, Philosoph, Theologe, H.-C. Schmidt am Busch and K. F. Wehmeier, Eds. Paderborn: mentis-Verlag, 2004, pp. 69–83.

V. Peckhaus, “Who was Wilhelm Schlötel?,” in Filosofisia tutkielmia - Philosophical Studies in honorem Leila Haaparanta, K. Luoma, E. Oesch, and R. Vilkko, Eds. Tampere: Tampere University Press, 2004, pp. 285–296.

F. Schafmeister and J. Kolar, “Novel Modulation Schemes for Conventional and Sparse Matrix Converters Facilitating Reactive Power Transfer Independent of Active Power Flow,” in Proc. 35th IEEE Power Electronics Specialists Conference (PESC), Aachen, Germany, 2004, vol. 4, pp. 2917–2923.

P. Ide, F. Schafmeister, N. Fröhleke, and H. Grotstollen, “Enhanced Control Scheme for Three-Phase / Three-Level Rectifiers at Partial Load,” in Proc. 35th IEEE Power Electronics Specialists Conference (PESC), Aachen, Germany, 2004, vol. 1, pp. 207–213.

F. Schafmeister and J. Kolar, “Novel Hybrid Modulation Schemes Extending the Reactive Power Control Range of Conventional and Sparse Matrix Converters Operating at Maximum Output Voltage,” presented at the  International Power Electronics and Motion Control Conference (EPE-PEMC), Riga, Latvia, 2004.

J. Böcker, N. Amann, and B. Schulz, “Active Suppression of Torsional Oscillations,”10.1016/s1474-6670(17)31123-0__IFAC Proceedings Volumes, vol. 37, no. 14, pp. 319–324, 2004, doi:10.1016/s1474-6670(17)31123-0 .

N. Amann, J. Böcker, and F. Prenner, “Active Damping of Drive Train Oscillations for an Electrically Driven Vehicle,”10.1109/tmech.2004.839036__IEEE/ASME Transactions on Mechatronics, vol. 9, no. 4, pp. 697–700, 2004, doi:10.1109/tmech.2004.839036 .

J. Böcker, “Tolerance band controller for a three-level four-quadrant converter including DC link balancing,”10.1109/pesc.2004.1354749__presented at the PESC, Aachen, 2004, doi:10.1109/pesc.2004.1354749 .

H. D. Njiende, N. Fröhleke, and J. Böcker, “Derivation of integrated magnetic components using reluctance and mathematical modeling,”10.1109/pesc.2004.1354859__2004, doi:10.1109/pesc.2004.1354859 .

C. Kauczor and N. Fröhleke, “Inverter topologies for ultrasonic piezoelectric transducers with high mechanical Q-factor,”10.1109/pesc.2004.1355265__2004, doi:10.1109/pesc.2004.1355265 .

H. Wetzel, A. Siegel, H. Njiende, N. Fröhleke, and J. Böcker, “Low Voltage Asymmetrical Half-Bridge Converter with Integrated Magnetics,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.

B. Schulz, A. Pottharst, N. Fröhleke, and J. Böcker, “Modelling of Influences to a Linear-Drive-System,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.

A. Pottharst, K. Baptist, O. Schütze, J. Böcker, N. Fröhleke, and M. Dellnitz, “Operating Point Assignment of a Linear Motor Driven Vehicle Using Multiobjective Optimization Methods,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.

R. Li, A. Pottharst, N. Fröhleke, and J. Böcker, “Energy Storage Scheme for Rail-guided Shuttle using Ultracapacitor and Battery,” presented at the 11th International Power Electronics and Motion Control Conferences, Riga, Latvia, 2004.

R. Li, A. Pottharst, N. Fröhleke, and J. Böcker, “Analysis and Design of Improved Isolated Full-Bridge Bi-Directional DC-DC Converter,” presented at the PESC 2004, Aachen, Germany, 2004.

A. Pottharst, B. Schulz, and J. Böcker, “Kommunikationssystem einer Anlage mit doppelt gespeistem Linearmotor,” presented at the SPS/IPC/DRIVES 2004, Nürnberg, Deutschland, 2004.

C. Kauczor, T. Schulte, and H. Grotstollen, “Piezoelectric Transformer of Travelling Wave Type,” presented at the ACTUATOR 2004, Bremen, Germany, 2004.

V. Peckhaus, “Frege, Friedrich Ludwig Gottlob,” in Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 2: F–Mei, D. Hoffmann, H. Laitko, and S. Müller-Wille, Eds. Heidelberg: Spektrum Akademischer Verlag, 2004, pp. 47–48.

V. Peckhaus, “Gödel, Kurt Friedrich,” in Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 2: F–Mei, D. Hoffmann, H. Laitko, and S. Müller-Wille, Eds. Heidelberg: Spektrum Akademischer Verlag, 2004, pp. 107–108.

V. Peckhaus, “Peirce, Charles Sanders,” in Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z, D. Hoffmann, H. Laitko, and S. Müller-Wille, Eds. Heidelberg: Spektrum Akademischer Verlag, 2004, pp. 137–138.

V. Peckhaus, “Zermelo, Ernst Friedrich Ferdinand,” in Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z, D. Hoffmann, H. Laitko, and S. Müller-Wille, Eds. Heidelberg: Spektrum Akademischer Verlag, 2004, pp. 492–493.

V. Peckhaus, “van der Waerden, Bartel Leendert,” in Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z, D. Hoffmann, H. Laitko, and S. Müller-Wille, Eds. Heidelberg: Spektrum Akademischer Verlag, 2004, pp. 387–388.

V. Peckhaus, “Whitehead, Alfred North,” in Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z, D. Hoffmann, H. Laitko, and S. Müller-Wille, Eds. Heidelberg: Spektrum Akademischer Verlag, 2004, p. 449.

V. Peckhaus, “Tarski, Alfred,” in Lexikon der bedeutenden Naturwissenschaftler in drei Bänden, Bd. 3: Men–Z, D. Hoffmann, H. Laitko, and S. Müller-Wille, Eds. Heidelberg: Spektrum Akademischer Verlag, 2004, p. 348.

V. Peckhaus, “Rudolf Boehm, Topik. Dordrecht, Boston and London: Kluwer, 2002 (Phaenomenologica vol. 162),” History and Philosophy of Logic, vol. 25, no. (2003). pp. 155–156, 2004.

B. Yang, Regelung der Längs- und Vertikalbewegung des Linearmotors für ein vollaktives spurgeführtes Bahnfahrzeug. 2004.

T. Schulte, Stromrichter- und Regelungskonzepte für Ultraschall-Wanderwellenmotoren. 2004.

V. Peckhaus, “Wittgenstein, Ludwig. ‘Philosophische Untersuchungen. Philosophical Investigations’, transl. from the German by G.E.M. Anscombe, edited with a note by Anscombe and R. Rhees, 3rd rev. ed., Blackwell: Oxford 2001, Reprint 2003,” Zentralblatt für Mathematik und ihre Grenzgebiete. 2004.

V. Peckhaus, “Ropolyi, László, ‘Lakatos and Lukács’, in: G. Kampis/L. Kvasz/M. Stöltzner (Hgg.), Appraising Lakatos: Mathematics, Methodology and the Man, Kluwer: Dordrecht 2002, 303–337,” Zentralblatt für Mathematik und ihre Grenzgebiete. 2004.

V. Peckhaus, “Gillies, Donald/Zheng, Yuxin: ‘Dynamic Interactions with the Philosophy of Mathematics’, In: Theoria. Segunda Epoca 16, No. 42 (2001), 437–459,” Zentralblatt für Mathematik und ihre Grenzgebiete . 2004.

V. Peckhaus, “Buldt, Bernd u.a. (Hgg.), ‘Kurt Gödel: Wahrheit &; Beweisbarkeit, Bd. 1: Kompendium zum Werk’, öbv &; hpt: Wien 2002,” Zentralblatt für Mathematik und ihre Grenzgebiete . 2004.

V. Peckhaus, “Tomassi, Paul, ‘Logic after Wittgenstein’, In: Nordic Journal of Philosophical Logic 6 (2001), 43–70,” Zentralblatt für Mathematik und ihre Grenzgebiete . 2004.

V. Peckhaus, “Lavor, Brendan. ‘Lakatos. An Introduction’, London: Routledge 1998,” Zentralblatt für Mathematik und ihre Grenzgebiete . 2004.

V. Peckhaus, “Mormann, Thomas, ‘Towards and Evolutionary Account of Conceptual Change in Mathematics: Proofs and Refutations and the Axiomatic Variation of Concepts’, In: G. Kampis/L. Kvasz/M. Stöltzner (Hgg.), Appraising Lakatos: Mathematics, Methodology and the Man, Kluwer: Dordrecht 2002, 139–156,” Zentralblatt für Mathematik und ihre Grenzgebiete . 2004.

V. Peckhaus, “Koetsier, Teun. “Lakatos’ Mitigated Scepticism in the Philosophy of Mathematics”, In: G. Kampis/L. Kvasz/M. Stöltzner (Hgg.), Appraising Lakatos: Mathematics, Methodology and the Man, Kluwer: Dordrecht 2002, 189–210,” Zentralblatt für Mathematik und ihre Grenzgebiete. 2004.