George Papastefanatos,
Yannis Stavrakas,
Christos Papatheodorou,
Theodore Dalamagas,
Dieter Pfoser,
&
Timos Sellis,
Collaborative information spaces: Research directions at IMIS,
in
Proc. 2nd ERCIM DIS Workshop on Large-Scale and Federated Information Spaces
.
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