Roderic Béra, Christophe Claramunt. Topology-based proximities in spatial systems. Journal of Geographical Systems, 5(4):353-379, 2003. [doi]
@article{BeraC03, title = {Topology-based proximities in spatial systems}, author = {Roderic Béra and Christophe Claramunt}, year = {2003}, doi = {10.1007/s10109-003-0115-y}, url = {http://dx.doi.org/10.1007/s10109-003-0115-y}, tags = {rule-based}, researchr = {https://researchr.org/publication/BeraC03}, cites = {0}, citedby = {0}, journal = {Journal of Geographical Systems}, volume = {5}, number = {4}, pages = {353-379}, }