@phdthesis{Mueller2004, author = {Andreas M{\"u}ller}, title = {Nutzerunterst{\"u}tzung in elektronischen, kartographischen Medien}, type = {doctoralthesis}, school = {Universit{\"a}t Trier}, doi = {10.25353/ubtr-xxxx-2434-ae6f}, year = {2004}, }