Roger Longhorn, Michael Blakemore. Re-visiting the Valuing and Pricing of Digital Geographic Information. J. Digit. Inf., 4(2), 2003. [doi]
@article{LonghornB03, title = {Re-visiting the Valuing and Pricing of Digital Geographic Information}, author = {Roger Longhorn and Michael Blakemore}, year = {2003}, url = {http://jodi.ecs.soton.ac.uk/Articles/v04/i02/Longhorn/}, researchr = {https://researchr.org/publication/LonghornB03}, cites = {0}, citedby = {0}, journal = {J. Digit. Inf.}, volume = {4}, number = {2}, }