Media type: E-Article Title: Extending geographical representation to include fields of spatial objects Contributor: Cova, Thomas J.; Goodchild, Michael F. Published: Informa UK Limited, 2002 Published in: International Journal of Geographical Information Science, 16 (2002) 6, Seite 509-532 Language: English DOI: 10.1080/13658810210137040 ISSN: 1365-8816; 1362-3087 Origination: Footnote: