@incollection{Lengger2019,
  author    = {Werner Lengger},
  title     = {Waal},
  booktitle = {Handbuch der historischen St{\"a}tten: Bayern 1; Altbayern und Schwaben},
  editor    = {Hans-Michael K{\"o}rner and Alois Schmid},
  isbn      = {978-3-520-32401-6},
  year      = {2019},
}