Farm management using GIS technologies
Hájek Milan  Čižmár Jozef ; V210 Chalachanová Faixová Jana ; V130 Fencík Róbert ; V210
Sofia : University of Architecture, Civil Engineering and Geodesy - Sofia, 2002
http://www.uacg.acad.bg/UACEG_site/sem_geo/Seminar_of_Cartography.htm
elektronické dokumenty
GHG - Works carried in Internet
GLOB - záznamy, ktoré neprešli globalkami