@article{WambsganssHasingerGiacconietal.2000,
  author    = {Wambsganß, Joachim and Hasinger, G{\"u}nther and Giacconi, R. and Gunn, J. E. and Lehmann, Ingo and Schmidt, M. and Schneider, D. P. and Stanke, Thomas and Tr{\"u}mper, J. and Woods, D. and Zamorani, G.},
  title     = {A Distant X-ray Selected, Gravitationally-Lensing Galaxy Cluster},
  year      = {2000},
  language  = {en}
}
@article{LehmannHasingerGiacconietal.2000,
  author    = {Lehmann, Ingo and Hasinger, G{\"u}nther and Giacconi, R. and Gunn, J. E. and Schmidt, M. and Schneider, D. P. and Stanke, Thomas and Tr{\"u}mper, J. and Wambsganß, Joachim and Woods, D. and Zamorani, G.},
  title     = {One of the highest redshift X-Ray selected clusters of galaxies},
  isbn      = {3-540-67163-3},
  year      = {2000},
  language  = {en}
}