@ARTICLE{Straccia04f,  
AUTHOR ="Straccia, Umberto and Thanos, Costantino",  
TITLE ="Cyclades: An Open Collaborative Virtual Archive Environment",  
Journal = "International Journal of Digital Libraries",  
YEAR ="2004",  
VOLUME ="4",  
NUMBER ="1",  
PAGES ="23-24", 
publisher = "Springer Verlag" 
}