Liporaci, S. R., S. A. Rohm, F. G. Pedro, and A. Cereda Junior. “COMPARISON BETWEEN DIFFERENT DIGITAL TECHNIQUES FOR ELABORATION OF DIGITAL TERRAIN MODEL AND SLOPES CHART, WITH APPLICATION IN GEOLOGICAL-GEOTECHNICAL MAPPING AND ENVIRONMENTAL ANALYSIS”. Holos Environment, vol. 3, no. 2, Apr. 2003, pp. 85-102, doi:10.14295/holos.v3i2.1129.