Ngo Huu Toan and Preston T R  2008 Taro as a local feed resource for pigs in small scale household condition. Proceedings MEKARN Regional Conference 2007: Matching Livestock Systems with Available Resources (Editors: Reg Preston and Brian Ogle), Halong Bay, Vietnam, 25-28 November 2007 http://www.mekarn.org/prohan/toan_hue.htm