Columbia subject headings:
Harvard subject headings:
News Web sites--Computer networks--Germany.
News Web sites--Germany.
News agencies--Computer networks--Germany.
News agencies--Germany--Data processing.
Recommender systems (Information filtering)--Germany.
Web usage mining--Germany.
Princeton subject headings:
News Web sites--Computer networks--Germany.
News Web sites--Germany.
News agencies--Computer networks--Germany.
News agencies--Germany--Data processing.
Recommender systems (Information filtering)--Germany.
Web usage mining--Germany.