@article{KruseShenArnoldetal.1993,
  author    = {N. Kruse and B. J. Shen and S. Arnold and H. P. Tony and T. M{\"u}ller and Walter Sebald},
  title     = {Two distinct functional sites of human interleukin 4 are identified by variants impaired in either receptor binding or receptor activation},
  year      = {1993},
}