%0 Journal Article %T Settlement Analysis of a Confined Sand Aquifer Overlain by a Clay Layer due to Single Well Pumping %A Wen-jie Niu %A Zhenyu Wang %A Feng Chen %A Hongran Li %J Mathematical Problems in Engineering %D 2013 %I Hindawi Publishing Corporation %R 10.1155/2013/789853 %U http://dx.doi.org/10.1155/2013/789853