@article{Donat2009,
  author    = {Fedor Maria von Donat},
  title     = {{\"U}ber die Pontinischen S{\"u}mpfe},
  journal   = {Verhandlungen / Gesellschaft f{\"u}r Erdkunde zu Berlin},
  volume    = {19},
  pages     = {186 -- 202},
  year      = {2009},
}