Columbia subject headings:
Digital watermarking--Congresses.
Information storage and retrieval systems--Design--Congresses.
Piccard, Gerhard--Congresses.
Watermarks--Data processing--Congresses.
Harvard subject headings:
Digital watermarking--Congresses.
Information storage and retrieval systems--Design--Congresses.
Piccard, Gerhard--Congresses.
Watermarks--Data processing--Congresses.
Princeton subject headings: