%0 Journal Article %T Conditional stochastic averaging of steady state unsaturated flow by means of Kirchhoff Transformation %A Tartakovsky, Daniel M. %A Neuman, Shlomo P. %A Lu, Zhiming %J Water Resources Research %V 35 %N 3 %P 731-745 %@ 0043-1397 %D 1999-03-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve