@article{23363,
  author       = {{Nowinski, Günther and Trächtler, Ansgar and Lafuente Jorge, Ruben}},
  journal      = {{Proc. 2. Intern. Conf. Intelligent Systems Engineering}},
  title        = {{{The Design Process for Conventional and Neural Controllers - a Case Study}}},
  year         = {{1994}},
}

@article{23364,
  author       = {{Trächtler, Ansgar}},
  journal      = {{Proc. XIII IMEKO World Congress}},
  pages        = {{1893--1898,}},
  title        = {{{Tomographic Measurement of Stress Tensor Fields}}},
  volume       = {{3}},
  year         = {{1994}},
}

@proceedings{7798,
  editor       = {{Cuny, Janice and Ehrig, Hartmut and Engels, Gregor and Rozenberg, Grzegorz}},
  publisher    = {{Springer}},
  title        = {{{Graph Gramars and Their Application to Computer Science, 5th International Workshop (1994), Selected Papers}}},
  doi          = {{http://dx.doi.org/10.1007/3-540-61228-9}},
  volume       = {{1073}},
  year         = {{1994}},
}

@inproceedings{8096,
  author       = {{Krauter, Stefan}},
  booktitle    = {{Proceedings of the 1st World Conference on Photovoltaic Energy Conversion (Joint Congress of IEEE/PVSEC/EUPVSEC), Waikoloa, Hawaii (USA), 5.–9. Dezember 1994, S. 734–737.}},
  title        = {{{Actual Optical and Thermal Performance of PV-Modules}}},
  year         = {{1994}},
}

@article{16541,
  author       = {{Dellnitz, Michael and Melbourne, Ian}},
  issn         = {{0377-0427}},
  journal      = {{Journal of Computational and Applied Mathematics}},
  pages        = {{249--259}},
  title        = {{{Generic movement of eigenvalues for equivariant self-adjoint matrices}}},
  doi          = {{10.1016/0377-0427(94)90032-9}},
  year         = {{1994}},
}

@phdthesis{53454,
  author       = {{Englisch, Brigitte}},
  isbn         = {{3515064311}},
  pages        = {{494}},
  title        = {{{Die Artes liberales im frühen Mittelalter (5.-9. Jh.). Das Quadrivium und der Komputus als Indikatoren für Kontinuität und Erneuerung der exakten Wissenschaften zwischen Antike und Mittelalter}}},
  volume       = {{33}},
  year         = {{1994}},
}

@inproceedings{43450,
  abstract     = {{The coherent dynamics of exciton wavepackets in (GaIn)As/GaAs as well as (GaIn)As/Ga(PAs) multiple quantum well structures is studied by means of transient four-wave mixing (FWM) experiments. The wavepackets are generated by simultaneous excitation of several exciton transitions with laser pulses of about 100 fs duration. The time-integrated FWM signals exhibit a pronounced modulation superimposed on the overall decay which can be attributed to the quantum interference of the different eigenstates. In the time-resolved FWM signals this interference is not present, reflecting the interplay between many-body Coulomb effects and inhomogeneous broadening. This experimental technique is then employed to extract the exciton binding energies in pseudomorphic symmetrically strained (GaIn)As/GaIPAs) with various In contents.}},
  author       = {{Meier, Torsten and Koch, M. and Feldmann, J. and Göbel, E.O. and Jahnke, F. and Schäfer, W. and Thomas, P. and Koch, S.W. and Nickel, H. and Luttgen, S. and Stolz, W.}},
  booktitle    = {{Proceedings der 8. International Winterschool on New Developments in Physics}},
  location     = {{Mauterndorf}},
  number       = {{11S}},
  pages        = {{1965--1971}},
  publisher    = {{IOP Publishing}},
  title        = {{{Coherent Dynamics of Exciton Wavepackets in Semiconductor Heterostructures}}},
  doi          = {{10.1088/0268-1242/9/11S/018}},
  volume       = {{9}},
  year         = {{1994}},
}

@inproceedings{44284,
  abstract     = {{Several recent experimental and theoretical studies have demonstrated the importance of exciton/exciton coupling due to Coulomb interactions for the nonlinear optical response of the 2D exciton in GaAs quantum wells (QWs).1,2 These results imply that multilevel models are required in order to provide a theoretically appropriate description of the nonlinear behavior. Previous application of a renormalized 9-level system has proven successful in describing the third-order response of hh-excitons in GaAs quantum wells.2 We present a comprehensive experimental and theoretical investigation of the polarization selection rules for degenerate- four-wave-mixing (DFWM) and quantum beating of hh and lh transitions in a GaAs QW. Depending on the polarization and temporal sequence of the three pulses simultaneous excitation of the hh and lh transitions generates either quantum beats (QB), no modulation of the signal, or a superposition of QB and polarization interference (PI) effects as proved by spectrally resolved (SR)-DFWM.}},
  author       = {{Meier, Torsten and Mayer, E.J. and Smith, G.O. and Kuhl, J. and Schulze, A. and Bennhardt, D. and Koch, S.W. and Thomas, P. and Hey, R. and Ploog, K.}},
  booktitle    = {{Proceedings of the 5th European Quantum Electronics Conference}},
  location     = {{Amsterdam, Netherlands}},
  pages        = {{187--188}},
  title        = {{{Polarization selection rules for quantum beating between light and heavy holes in GaAs quantum wells}}},
  year         = {{1994}},
}

@article{23365,
  author       = {{Trächtler, Ansgar}},
  journal      = {{Process Tomography - a Strategy for Industrial Exploitation}},
  pages        = {{34--37,}},
  title        = {{{Use of Symmetries in Tomography}}},
  year         = {{1993}},
}

@article{23366,
  author       = {{Trächtler, Ansgar}},
  journal      = {{at-Automatisierungstechnik}},
  pages        = {{51--57,}},
  title        = {{{Vollständige Modale Synthese stationär unstörbarer und stationär perfekter Zustandsregelungen}}},
  volume       = {{41}},
  year         = {{1993}},
}

@article{8895,
  author       = {{Sextro, Walter and Schmalhorst, B}},
  journal      = {{Zeitschrift für angewandte Mathematik und Mechanik (ZAMM)}},
  pages        = {{255--257}},
  title        = {{{Static Behaviour of Drill Strings in Curved Boreholes}}},
  volume       = {{73}},
  year         = {{1993}},
}

@phdthesis{30020,
  author       = {{Heinemann, Lothar}},
  isbn         = {{3-8267-2036-9}},
  title        = {{{Modellbildung von Mehrwicklungstransformatoren bei quasi-stationären Feldstärkeverteilungen}}},
  year         = {{1993}},
}

@inproceedings{44286,
  abstract     = {{In degenerate four-wave-mixing (DFWM) experiments the polarization of the incident laser pulses can have a strong influence on the measured signal. For GaAs quantum wells a number of DFWM experiments were performed by using either parallel or perpendicular polarization of the incident laser pulses. Experimentally, it turned out that some characteristic features of the signal differ appreciably for the two configurations. In particular, different dephasing times, phase shifts of the quantum beats, different time-resolved behavior (echoes versus free-induction decay), and intensity dependence of the measured signal have been reported}},
  author       = {{Meier, Torsten and Bennhardt, D. and Thomas, P. and Eccleston, R. and Mayer, E. and Kuhl, J.}},
  booktitle    = {{Quantum Electronics and Laser Science Conference}},
  isbn         = {{1-55752-302-9}},
  location     = {{Baltimore, Maryland United States}},
  title        = {{{Theory for polarization-dependent four-wave-mixing signals in quantum wells}}},
  year         = {{1993}},
}

@inproceedings{44287,
  abstract     = {{We investigate the coherent coupling of free and bound excitonic transitions, as wets as of distinct excitonic transitions arising from spatially separated quantum-well islands by means of time-resolved four-wave-mixing experiments.}},
  author       = {{Meier, Torsten and Koch, M. and Feldmann, J. and von Plessen, G. and Schulze, A. and Göbel, E.O. and Thomas, P. and Schmitt-Rink, S. and Shah, J. and Ploog, K. and Köhler, K.}},
  booktitle    = {{Quantum Electronics and Laser Science Conference}},
  isbn         = {{1-55752-302-9}},
  location     = {{Baltimore, Maryland United States}},
  title        = {{{Coherent coupling of exciton transitions in semiconductor quantum structures}}},
  year         = {{1993}},
}

@article{23367,
  author       = {{Trächtler, Ansgar and Lohmann, Boris and Struck, Günther}},
  journal      = {{at-Automatisierungstechnik}},
  pages        = {{391--396,}},
  title        = {{{Regelung der Querbewegung eines kamerageführten Straßenfahrzeugs}}},
  volume       = {{40}},
  year         = {{1992}},
}

@article{23368,
  author       = {{Trächtler, Ansgar}},
  journal      = {{VDI Nachrichten}},
  number       = {{287}},
  title        = {{{Analytische Berücksichtigung von Strukturbeschränkungen beim Reglerentwurf im Zustandsraum}}},
  volume       = {{Reihe 8}},
  year         = {{1992}},
}

@article{23369,
  author       = {{Trächtler, Ansgar}},
  journal      = {{at-Automatisierungstechnik}},
  pages        = {{407--413,}},
  title        = {{{Entwurf von Ausgangsrückführungen mit der Vollständigen Modalen Synthese}}},
  volume       = {{40}},
  year         = {{1992}},
}

@phdthesis{30017,
  author       = {{Fröhleke, Norbert }},
  isbn         = {{978-3-86111-142-9}},
  title        = {{{Topologien und Schalterkonzepte für Schaltnetzteile hoher Leistung bei geringer Ausgangsspannung}}},
  year         = {{1992}},
}

@phdthesis{30018,
  author       = {{Wang, Yongfan}},
  isbn         = {{978-3-86111-155-9}},
  title        = {{{Pulswechselrichtergespeiste Drehstromantriebe unter Berücksichtigung des Stromlückens}}},
  year         = {{1992}},
}

@misc{19491,
  author       = {{Eke, Norbert Otto}},
  booktitle    = {{Literatur Lexikon. Autoren und Werke deutscher Sprache. Bd. 9}},
  editor       = {{Killy, Walther}},
  pages        = {{355}},
  title        = {{{Georg von Reinbeck}}},
  volume       = {{9}},
  year         = {{1991}},
}