@article{NagelWarsinke2006,
  author    = {Birgit Nagel and Axel Warsinke},
  title     = {Towards separation-free electrochemical affinity sensors by using antibodies, aptamers and molecularly imprinted polymers : a review},
  doi       = {10.1080/00032710600853903},
  year      = {2006},
}