@inproceedings{WollertPlessmann1993,
  author    = {Wollert, J{\"o}rg and Plessmann, K. W.},
  title     = {Controlling processes by operating-point based hybride observers},
  series = {EUFIT '93 : September 7 - 10, 1993, Eurogress Aachen, Germany, proceedings / First European Congress on Fuzzy and Intelligent Technologies},
  booktitle = {EUFIT '93 : September 7 - 10, 1993, Eurogress Aachen, Germany, proceedings / First European Congress on Fuzzy and Intelligent Technologies},
  publisher = {Verl. d. Augustinus Buchh.},
  address   = {Aachen},
  organization    = {EUFIT <1, 1993, Aachen>},
  isbn      = {3-86073-176-9},
  pages     = {1151 -- 1155},
  year      = {1993},
  language  = {en}
}
@inproceedings{Schwarzer1992,
  author    = {Schwarzer, Klemens},
  title     = {A new kind of efficient solar cookers with and without temporary heat storage},
  series = {Advances in solar cooking : proceedings of the First World Conference on Solar Cooking, Stockton, California, USA, June 19 - 20, 1992 / ed. by Edwin Pejack},
  booktitle = {Advances in solar cooking : proceedings of the First World Conference on Solar Cooking, Stockton, California, USA, June 19 - 20, 1992 / ed. by Edwin Pejack},
  publisher = {Solar Box Cookers International},
  address   = {Sacramento, Calif.},
  pages     = {107 -- 112},
  year      = {1992},
  language  = {en}
}
@inproceedings{MelissNeskakisUsbecketal.1992,
  author    = {Meliß, Michael and Neskakis, A. and Usbeck, S. and Vogelsang, E. and Wagner, L. and Wiediger, J{\"u}rgen},
  title     = {PV-transmitter and receiver},
  series = {Harmony with nature : : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 3: Photovoltaics},
  booktitle = {Harmony with nature : : proceedings / ISES Solar World Congress, Budapest 1993. International Solar Energy Society, Hungarian Section (H-ISES); Hungarian Solar Energy Society (HSES). Vol. 3: Photovoltaics},
  publisher = {Hungarian Energy Society},
  address   = {Budapest},
  pages     = {375 -- 380},
  year      = {1992},
  language  = {en}
}
@inproceedings{GoettscheHinschWittwer1992,
  author    = {G{\"o}ttsche, Joachim and Hinsch, Andreas and Wittwer, Volker},
  title     = {Electrochromic and optical properties of mixed WO3-TiO2 thin films produced by sputtering and the sol-gel technique},
  series = {Optical materials technology for energy efficiency and solar energy conversion XI: chromogenics for smart windows : 19 and 21 May 1992, Toulouse-Lab{\`e}ge. (SPIE proceedings series. 1728)},
  booktitle = {Optical materials technology for energy efficiency and solar energy conversion XI: chromogenics for smart windows : 19 and 21 May 1992, Toulouse-Lab{\`e}ge. (SPIE proceedings series. 1728)},
  editor    = {Hugo-Le Goff, Anne},
  publisher = {SPIE},
  address   = {Bellingham, Wash.},
  isbn      = {0-8194-0901-4},
  pages     = {13 -- 25},
  year      = {1992},
  language  = {en}
}
@inproceedings{SchwarzerBiegerRickingetal.1991,
  author    = {Schwarzer, Klemens and Bieger, W. and Ricking, N. and Bansal, Narenda K.},
  title     = {Solar cooker with a rock bed cum oil storage},
  series = {1991 Solar World Congress : : proceedings of the Biennial Congress of the International Solar Energy Society, Denver, Colorado, USA, 19 - 23 August 1991 / ed. by M. E. Arden. Bd. 3,II},
  booktitle = {1991 Solar World Congress : : proceedings of the Biennial Congress of the International Solar Energy Society, Denver, Colorado, USA, 19 - 23 August 1991 / ed. by M. E. Arden. Bd. 3,II},
  publisher = {Pergamon Pr.},
  address   = {Oxford},
  isbn      = {0-08-041690-x},
  pages     = {3751 -- 3756},
  year      = {1991},
  language  = {en}
}
@inproceedings{SchwarzerWiedenfeldBansaletal.1991,
  author    = {Schwarzer, Klemens and Wiedenfeld, M. and Bansal, Narenda K. and Ertl, Karl-Heinz},
  title     = {A novel solar sterilization and water destillation system : experiment and thermodynamic analysis},
  series = {1991 Solar World Congress : : proceedings of the Biennial Congress of the International Solar Energy Society, Denver, Colorado, USA, 19 - 23 August 1991 / ed. by M. E. Arden. Bd. 2,II},
  booktitle = {1991 Solar World Congress : : proceedings of the Biennial Congress of the International Solar Energy Society, Denver, Colorado, USA, 19 - 23 August 1991 / ed. by M. E. Arden. Bd. 2,II},
  publisher = {Pergamon Pr.},
  address   = {Oxford},
  isbn      = {0-08-041690-x},
  pages     = {2276 -- 2281},
  year      = {1991},
  language  = {en}
}
@inproceedings{BerndtKalbeKuropkaetal.1990,
  author    = {Berndt, Heinz and Kalbe, Jochen and Kuropka, Rolf and Meyer-Stork, L. Sebastian and H{\"o}cker, Hartwig},
  title     = {Progress and limitations of the DNA analysis in fine animal fiber identification},
  series = {Proceedings of the 2nd International Symposium on Specialty Animal Fibers : Aachen, October 19 - 20, 1989. - (Schriftenreihe des Deutschen Wollforschungsinstituts an der Technischen Hochschule Aachen e. V. ; 106)},
  booktitle = {Proceedings of the 2nd International Symposium on Specialty Animal Fibers : Aachen, October 19 - 20, 1989. - (Schriftenreihe des Deutschen Wollforschungsinstituts an der Technischen Hochschule Aachen e. V. ; 106)},
  editor    = {K{\"o}rner, Andrea},
  publisher = {Dt. Wollforschungsinst.},
  address   = {Aachen},
  pages     = {259 -- 265},
  year      = {1990},
  language  = {en}
}
@inproceedings{Baumann1989,
  author    = {Baumann, Marcus},
  title     = {Primary production and phytoplankton growth in the marginal ice zone of the Fram Strait and the interpretation of the field data with autecological experiments (Abstract)},
  series = {Oceanography and biology of Arctic seas : selected papers from the ICES Symposium on Marine Sciences of the Arctic and Subarctic Regions, held in Santander, 28 - 30 September 1987. (Rapports et proc{\`e}s-verbaux des r{\´e}unions / Conseil International pour l'Exploration de la Mer ; 188)},
  booktitle = {Oceanography and biology of Arctic seas : selected papers from the ICES Symposium on Marine Sciences of the Arctic and Subarctic Regions, held in Santander, 28 - 30 September 1987. (Rapports et proc{\`e}s-verbaux des r{\´e}unions / Conseil International pour l'Exploration de la Mer ; 188)},
  editor    = {Hempel, G.},
  publisher = {International Council for the Exploration of the Sea},
  address   = {Copenhagen},
  organization    = {Symposium on Marine Sciences of the Arctic and Subarctic Regions <1987, Santander>},
  pages     = {128},
  year      = {1989},
  language  = {en}
}
@inproceedings{StaatBallmann1989,
  author    = {Staat, Manfred and Ballmann, J.},
  title     = {Fundamental aspects of numerical methods for the propagation of multi-dimensional nonlinear waves in solids},
  series = {Nonlinear hyperbolic equations : theory, computations methods, and applications ; proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen},
  booktitle = {Nonlinear hyperbolic equations : theory, computations methods, and applications ; proceedings of the 2nd International Conference on Nonlinear Hyperbolic Problems, Aachen},
  pages     = {574 -- 588},
  year      = {1989},
  abstract  = {The nonlinear scalar constitutive equations of gases lead to a change in sound speed from point to point as would be found in linear inhomogeneous (and time dependent) media. The nonlinear tensor constitutive equations of solids introduce the additional local effect of solution dependent anisotropy. The speed of a wave passing through a point changes with propagation direction and its rays are inclined to the front. It is an open question whether the widely used operator splitting techniques achieve a dimensional splitting with physically reasonable results for these multi-dimensional problems. May be this is the main reason why the theoretical and numerical investigations of multi-dimensional wave propagation in nonlinear solids are so far behind gas dynamics. We hope to promote the subject a little by a discussion of some fundamental aspects of the solution of the equations of nonlinear elastodynamics. We use methods of characteristics because they only integrate mathematically exact equations which have a direct physical interpretation.},
  subject      = {Nichtlineare Welle},
  language  = {en}
}
@inproceedings{AnikFrohberg1989,
  author    = {Anik, Sabri and Frohberg, Martin G.},
  title     = {Thermodynamic behaviour of oxygen in molten metallic alloys},
  series = {Thermochemistry of alloys : recent developments of experimental methods ; [proceedings of the NATO Advanced Study Institute on Thermochemistry of Alloys, Recent Developments of Experimental Methods, Kiel, F.R.G., August 17 - 27, 1987]. - (NATO ASI series : Series C ; 286)},
  booktitle = {Thermochemistry of alloys : recent developments of experimental methods ; [proceedings of the NATO Advanced Study Institute on Thermochemistry of Alloys, Recent Developments of Experimental Methods, Kiel, F.R.G., August 17 - 27, 1987]. - (NATO ASI series : Series C ; 286)},
  editor    = {Brodowsky, Horst},
  publisher = {Springer},
  address   = {Dordrecht [u.a.]},
  isbn      = {0-7923-0434-9},
  pages     = {419 -- 428},
  year      = {1989},
  language  = {en}
}