@article{Giest2007,
  author    = {Giest, Hartmut},
  title     = {Didaktische Analyse als Mittel zur Kompetenzf{\"o}rderung im Unterricht},
  isbn      = {978- 3-7815-1532-1},
  year      = {2007},
  language  = {de}
}
@article{Giest2007,
  author    = {Giest, Hartmut},
  title     = {Methodisches Erschließen},
  isbn      = {978-3-7815-1508-6},
  year      = {2007},
  language  = {de}
}
@article{Giest2007,
  author    = {Giest, Hartmut},
  title     = {Kognitive Entwicklung},
  isbn      = {978-3-7815-1508-6},
  year      = {2007},
  language  = {de}
}