@INPROCEEDINGS{hdms04-TKD,  
AUTHOR    = {Christos Tryfonopoulos and Manolis Koubarakis and Yannis Drougas},  
TITLE     = "{Filtering Algorithms for Information Retrieval Models with Named Attributes and Proximity Operators}",  
BOOKTITLE = "{Proceedings of the 3rd Hellenic Data Management Symposium (HDMS)}",  
YEAR      = {2004},  
MONTH     = {March},  
ADDRESS   = "{Athens, Greece}",
}