1. Centre for Cartography, Vilnius University, M. K. Èiurlionio g. 21/27, LT-03101 Vilnius, Lithuania
2. Advanced Diploma Program in GIS, Malaspina University-College, 900 Fifth Street, Nanaimo, British Columbia, V9R 5S5, Canada
3. University College Dublin, College of Human Sciences, School of Geography, Planning & Environmental Policy, Richview, Clonskeagh Road, Dublin 14, Ireland
4. Department of Geodesy and Cadastre, Vilnius Gediminas Technical University, Saulëtekio al. 11, LT-10223 Vilnius, Lithuania
5. National Land Service under the Ministry of Agriculture, Gedimino pr. 19, LT-01103 Vilnius, Lithuania