@article{HardtMartinMeissburgeretal.2013,
  author    = {Arno Hardt and S. Martin and J. Meißburger and R. Retz and J. Wimmer},
  title     = {The cryopump system of the QQDDQ magnet spectrometer BIG KARL},
  journal   = {Vacuum},
  volume    = {28},
  number    = {10-11},
  pages     = {483},
  doi       = {10.1016/S0042-207X(78)80026-8},
  year      = {2013},
}