@inproceedings{KasemannGuestenHeymincketal.2006,
  author    = {C. Kasemann and R. G{\"u}sten and S. Heyminck and B. Klein and T. Klein and S. D. Philipp and A. Korn and G. Schneider and A. Henseler and A. Baryshev and T. M. Klapwijk},
  title     = {CHAMP+: a powerful array receiver for APEX},
  series = {Proc. SPIE 6275, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III. June 27, 2006},
  isbn      = {0-8194-6340-X},
  doi       = {10.1117/12.670810},
  pages     = {62750},
  year      = {2006},
  language  = {en}
}