@incollection{KrokerHoffschmidtSchwarzeretal.2013,
  author    = {Jan Kroker and Bernhard Hoffschmidt and Klemens Schwarzer and Frank Sp{\"a}te},
  title     = {PTC 1000 modular parabolic trough collector},
  booktitle = {Process heat collectors : state of the art within task 33/IV ; IEA SHC-Task 33 and SolarPACES-Task IV: Solar heat for industrial processes : F{\"o}rderkennzeichen BMBF 0329273A / Solar Heating and Cooling Executive Committee of the International Energy Agency (IEA) ; ed. Werner Weiss},
  year      = {2013},
}