Modern and Contemporary Art in Korea .....
It's the 'Korean Culture Series #1 Modern and Contemporary Art in Korea' by Kim Youngna which deals with the issues of tradition, modernity, and identity in modern and contemporary Korean art in Korea.
'On a deeper level, this is one of the only books of its kind in English that exposes readers to specific artists and their works, an especially useful resource for those who wish to know more than just surface level facts about Korean art.' Amazon
The book was publisher in 2005 by the Korea Foundation and as yet I haven't found any specific reference to Hanji but nonetheless it's a great reference to have on Korean Art history including it's trends during the twentieth century when Korea opened up to the West.