Devetero vrela (English Nine Sources) is a short right tributary of the Ilomska river, below Petrovo Polje.Vojnogeografski institut, Ed. (1962): Šiprage (List karte 1:25.000, Izohipse na 20 m). Vojnogeografski institut, Beograd / Military Geographical Institute, Ed. (1962): Šiprage (map sheet 1: 25.000, Contour lines at 20 m). Military Geographical Institute, Belgrade. Although only a few hundred meters long, it is very rich in water, with lots of small streams flowing into it, especially springs.
This body of water is named after the nine sources at the same place, although it is difficult to confirm visually.
References
External links https://www.google.ba/search?q=ilomska+maps&ie=utf-8&oe=utf-8&gws_rd=cr&ei=WU2VVPn5LYHkUpykhKgL http://itouchmap.com/?r=b&e=y&p=44.36556,17.49056:0:5:Ilomska%20Rijeka,%20Bosnia%20and%20Herzegovina:10