@article{HeitzmannKieschkeSchaarschmidt2007,
  author    = {Heitzmann, Berit and Kieschke, Ulf and Schaarschmidt, Uwe},
  title     = {Bedingungen der Lehrerarbeit},
  isbn      = {978-3-407-25465-8},
  year      = {2007},
  language  = {de}
}