Florinsky, I.V., 1998. Accuracy of local topographic variables derived from digital elevation models. International Journal of Geographical Information Science, 12: 47–61.
See also: Florinsky, I.V., 2008. On calculation accuracy in digital terrain modelling. Geodezia i Cartografia, No. 6: 28–32 (in Russian). PDF
DTMs and maps were produced using the software LandLord.