Max J. Egenhofer, James R. Richards. Exploratory Access to Geographic Data Based on the Map-overlay Metaphor. Journal of Computer Languages, 4(2):105-125, 1993.
@article{EgenhoferR93, title = {Exploratory Access to Geographic Data Based on the Map-overlay Metaphor}, author = {Max J. Egenhofer and James R. Richards}, year = {1993}, tags = {rule-based, data-flow}, researchr = {https://researchr.org/publication/EgenhoferR93}, cites = {0}, citedby = {0}, journal = {Journal of Computer Languages}, volume = {4}, number = {2}, pages = {105-125}, }