@book{Petsche2006,
  author    = {Hans-Joachim Petsche},
  title     = {Graßmann},
  editor    = {Emil A. Fellmann},
  volume    = {13},
  isbn      = {3-7643-7257-5},
  doi       = {10.1007/3-7643-7541-8},
  year      = {2006},
}