Roux Dirk J, Ashton Peter J, Nel Jeanne L, Mackay Heather M
Water Research Node, Monash University-South Africa, Private Bag X60, Roodepoort 1725, South Africa.
Conserv Biol. 2008 Dec;22(6):1382-7. doi: 10.1111/j.1523-1739.2008.01080.x. Epub 2008 Oct 20.