%0 Journal Article %T Rhetorical questions as catalyst in grammaticalization: Deriving Korean discourse marker KETUN from conditional connective %A Kim, Alan Hyun-Oak %A , %J Journal of Pragmatics %V 43 %N 4 %P 1023-1041 %@ 0378-2166 %D 2011-03-01 %I Elsevier BV %~ DeepDyve