Web Portal and Markup Language for Collaborative Environmental Research, pp.113-126, 2004. ,
DOI : 10.1007/978-1-4471-3798-6_13
A Portal Implementation for Information Sharing, 2005. ,
PortalU, a Tool to Support the Implementation of the Shared Environmental Information System (SEIS) in Germany, Proceedings of the European conference TOWARDS eENVIRONMENT, 2009. ,
Decision Support Systems: Current Practice and Continuing Challenges, 1980. ,
Web mining for web personalization, ACM Transactions on Internet Technology, vol.3, issue.1, pp.1-27, 2003. ,
DOI : 10.1145/643477.643478
URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.103.4914