@article{Firchau1980,
  author    = {Volker Firchau},
  title     = {Bounds for the expected value of information},
  journal   = {Operations-Research-Spektrum},
  volume    = {2},
  pages     = {65 -- 73},
  doi       = {10.1007/BF01720374},
  year      = {1980},
}