1. Adapting to climate change: public water supply in England and Wales;Arnell;Climatic Change,2006
2. Arnold W 2007 Vulnerable to rising seas, Singapore envisions a giant seawall New York Times http://www.nytimes.com/2007/08/29/world/asia/29iht-Dikes.2.7301576.html?_r=0
3. Chang Ai-Lien 2010 Long-term planning cut flood-prone areas in Singapore Straits Times http://wildsingaporenews.blogspot.in/2010/10/long-term-planning-cut-flood-prone.html#.USJEoWYyEXw