| Rocks & Min. (2007) 82:243-244 von Knorring, O. and Franke, W. (1987): A preliminary note on the mineralogy and geochemistry of the Aris phonolite, SWA/Namibia. Communications of the Geological Survey of South West Africa / Namibia, 3, 65 [http://www.koeln.netsurf.de/~w.steffens/aris.htm] |