%0 Journal Article %T Flow in heterogeneous porous mediums: 1. Darcian‐type description of two‐phase systems %A Nelson, R. William %J Water Resources Research %V 2 %N 3 %P 487-495 %@ 0043-1397 %D 1966-09-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve