@article{Denil_2012, title={Review of Basic GIS Coordinates, 2nd Edition}, url={https://cartographicperspectives.org/index.php/journal/article/view/cp71-denil1}, DOI={10.14714/CP71.62}, number={71}, journal={Cartographic Perspectives}, author={Denil, Mark}, year={2012}, month={Aug.}, pages={107–108} }