@book{EichhornJannOechsleretal.2003,
  author    = {Peter Eichhorn and Werner Jann and Walter A. Oechsler and G{\"u}nter P{\"u}ttner and Heinrich Reinermann},
  title     = {Verwaltungslexikon},
  isbn      = {3-7890-6319-3},
  year      = {2003},
}