Shiyan Ou Christopher S. G. Khoo Dion Hoe-Lian Goh Automatic Text Summarization in Digital Libraries. 159-172 2009 Handbook of Research on Digital Libraries http://www.igi-global.com/Bookstore/Chapter.aspx?TitleId=19879 reference/dlhandbook/2009 db/reference/dlhandbook/dlhandbook2009.html#OuKG09