@inproceedings{WarerkarSchmitzGoettscheetal.2008,
  author    = {Warerkar, S. and Schmitz, S. and G{\"o}ttsche, Joachim and Hoffschmidt, Bernhard and Tamme, R.},
  title     = {Performance analysis of an air-sand heat exchanger prototype for high-temperature storage},
  series = {EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1},
  booktitle = {EuroSun 2008 : 1st International Conference on Solar Heating, Cooling and Buildings ; 7th - 10th October 2008, Lisbon, Portugal : key lectures / ISES, International Solar Energy Society. Vol. 1},
  publisher = {Sociedade Portuguesa De Energia Solar (SPES)},
  address   = {Lissabon},
  isbn      = {978-1-61782-228-5},
  pages     = {2215 -- 2222},
  year      = {2008},
  language  = {en}
}
@inproceedings{WarerkarSchmitzGoettscheetal.2009,
  author    = {Warerkar, Shashikant and Schmitz, Stefan and G{\"o}ttsche, Joachim and Hoffschmidt, Bernhard and Reißel, Martin and Tamme, Rainer},
  title     = {Air-sand heat exchanger for high-temperature storage},
  series = {Proceedings of the ASME 3rd International Conference on Energy Sustainability : July 19 - 23, 2009, San Francisco, California, USA. Vol. 2},
  booktitle = {Proceedings of the ASME 3rd International Conference on Energy Sustainability : July 19 - 23, 2009, San Francisco, California, USA. Vol. 2},
  publisher = {ASME},
  address   = {New York, NY},
  isbn      = {978-0-7918-4890-6},
  pages     = {655 -- 661},
  year      = {2009},
  language  = {en}
}
@inproceedings{ZiolkoSchmitzSattleretal.2010,
  author    = {Ziolko, C. and Schmitz, M. and Sattler, Johannes, Christoph and Khedim, Ahmed and Hoffschmidt, Bernhard},
  title     = {AlSol - the open volumetric receiver technology moves to Africa},
  series = {SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France},
  booktitle = {SolarPACES 2010 : the CSP Conference: electricity, fuels and clean water from concentrated solar energy ; 21 to 24 September 2010, Perpignan, France},
  publisher = {Soc. OSC},
  address   = {Saint Maur},
  pages     = {93 -- 94},
  year      = {2010},
  language  = {en}
}
@inproceedings{ZiolkoFrickeAnthrakidisetal.2011,
  author    = {Ziolko, Christoph and Fricke, Barbara and Anthrakidis, Anette and Hoffschmidt, Bernhard and Dillig, Marius and Giese, Frank and Schwarzb{\"o}zl, Peter},
  title     = {{\"O}kobilanzielle Aspekte technologischer Entwicklungen des Solarturmkraftwerks},
  series = {Forschung und Entwicklung f{\"u}r solarthermische Kraftwerke : 14. K{\"o}lner Sonnenkolloquium Mittwoch, 13. Juli 2011, im Auditorium des Campus J{\"u}lich der FH Aachen : Kurzfassungen der Vortr{\"a}ge und Poster},
  booktitle = {Forschung und Entwicklung f{\"u}r solarthermische Kraftwerke : 14. K{\"o}lner Sonnenkolloquium Mittwoch, 13. Juli 2011, im Auditorium des Campus J{\"u}lich der FH Aachen : Kurzfassungen der Vortr{\"a}ge und Poster},
  publisher = {DLR},
  address   = {K{\"o}ln},
  pages     = {2 S.},
  year      = {2011},
  language  = {de}
}