@inbookPeckhaus_2004, place=Berlin/New York, series=de Gruyter Series in Logic and its Applications, title=Paradoxes in Göttingen, volume=6, booktitle=One Hundred Years of Russell’s Paradox. Mathematics, Logic, Philosophy, publisher=de Gruyter, author=Peckhaus, Volker, editor=Link, Godehard, year=2004, pages=501–515, collection=de Gruyter Series in Logic and its Applications 
LibreCat: /record/17549

@inbookPeckhaus_2004, place=Berlin, series=Logische Philosophie, title=Garantiert Widerspruchsfreiheit Existenz?, booktitle=Was folgt? Themen zu Wessel, publisher=Logos Verlag, author=Peckhaus, Volker, editor=Christiansen, Bente and Scheffler, Uwe, year=2004, pages=111–127, collection=Logische Philosophie 
LibreCat: /record/17548

@articlePeckhaus_2004, title=Calculus Ratiocinator vs. Characteristica Universalis? The Two Traditions in Logic, Revisted, volume=25, journal=History and Philosophy of Logic (Special Issue in Honor of Ivor Grattan-Guinness, hg. v. John W. Dawson, Jr.), author=Peckhaus, Volker, year=2004, pages=3–14 
LibreCat: /record/17545

@inbookPeckhaus_2004, place=New Delhi, title=Dignaga’s Logic of Invention, booktitle=History of the Mathematical Sciences, publisher=Hindustan Book Agency, author=Peckhaus, Volker, editor=Grattan-Guinness, Ivor and Yadav, B. S., year=2004, pages=97–107 
LibreCat: /record/17544

@inbookPeckhaus_2004, place=Amsterdam u. a., title=Schröder’s Logic, booktitle=Handbook of the History of Logic, Bd. 3: The Rise of Modern Logic: From Leibniz to Frege, publisher=Elsevier North Holland, author=Peckhaus, Volker, editor=Gabbay, Dov M. and Woods, John, year=2004, pages=557–609 
LibreCat: /record/17546

@inbookPeckhaus_2004, place=Paderborn, title=Scholz als Metaphysiker, booktitle=Heinrich Scholz: Logiker, Philosoph, Theologe, publisher=mentis-Verlag, author=Peckhaus, Volker, editor=Schmidt am Busch, Hans-Christoph and Wehmeier, Kai F. , year=2004, pages=69–83 
LibreCat: /record/17551

@inbookPeckhaus_2004, place=Tampere, series=Acta Philosofica Tamperensia, title=Who was Wilhelm Schlötel?, booktitle=Filosofisia tutkielmia - Philosophical Studies in honorem Leila Haaparanta, publisher=Tampere University Press, author=Peckhaus, Volker, editor=Luoma, Kaisa and Oesch, Erna and Vilkko, Risto, year=2004, pages=285–296, collection=Acta Philosofica Tamperensia 
LibreCat: /record/17552

@inproceedingsSchafmeister_Kolar_2004, place=Aachen, Germany, title=Novel Modulation Schemes for Conventional and Sparse Matrix Converters Facilitating Reactive Power Transfer Independent of Active Power Flow, volume=4, booktitle=Proc. 35th IEEE Power Electronics Specialists Conference (PESC), publisher=IEEE, author=Schafmeister, Frank and Kolar, Johann, year=2004, pages=2917–2923 
LibreCat: /record/30309

@inproceedingsIde_Schafmeister_Fröhleke_Grotstollen_2004, place=Aachen, Germany, title=Enhanced Control Scheme for Three-Phase / Three-Level Rectifiers at Partial Load, volume=1, booktitle=Proc. 35th IEEE Power Electronics Specialists Conference (PESC), publisher=IEEE, author=Ide, Peter  and Schafmeister, Frank and Fröhleke, Norbert and Grotstollen, Horst, year=2004, pages=207–213 
LibreCat: /record/30308

@inproceedingsSchafmeister_Kolar_2004, place=Riga, Latvia, title=Novel Hybrid Modulation Schemes Extending the Reactive Power Control Range of Conventional and Sparse Matrix Converters Operating at Maximum Output Voltage, booktitle=Proc. 11th International Power Electronics and Motion Control Conference (EPE-PEMC), publisher=EPE, author=Schafmeister, Frank and Kolar, Johann, year=2004 
LibreCat: /record/30310