Henzinger, M.; Chang, B.; Milch, B. & Brin, S.: Query-free news search. In: World Wide Web:Internet and Web Information Systems (2005), Nr. 8, S. 101-126
[BibTeX] 

Curtiss, M.; Bharat, K. & Schmitt, M.: Systems and methods for improving the ranking of news articles. , 2003
[BibTeX]