APA (7th ed.) Citation

Xu, J. (2007). Formalizing natural-language spatial relations between linear objects with topological and metric properties. International journal of geographical information science : IJGIS, 21(4), 377-395. https://doi.org/10.1080/13658810600894323

Chicago Style (17th ed.) Citation

Xu, Jun. "Formalizing Natural-language Spatial Relations Between Linear Objects with Topological and Metric Properties." International Journal of Geographical Information Science : IJGIS 21, no. 4 (2007): 377-395. https://doi.org/10.1080/13658810600894323.

MLA (9th ed.) Citation

Xu, Jun. "Formalizing Natural-language Spatial Relations Between Linear Objects with Topological and Metric Properties." International Journal of Geographical Information Science : IJGIS, vol. 21, no. 4, 2007, pp. 377-395, https://doi.org/10.1080/13658810600894323.