Dalibor
Šrámek
Petr
Berka
Jiří
Kosek
Vojtěch
Svátek
Improving WWW Access – from Single-Purpose Systems to
Agent Architectures?
167-178
Stefano A.
Cerri
Danail
Dochev
Artificial Intelligence
Methodology, Systems, and Application
Springer
Berlin
2000
ISBN 3-540-41044-9