| 2010 | ECIR | Interpreting User Inactivity on Search Results. | Sofia Stamou, Efthimis N. Efthimiadis |
| 2010 | SIGIR | The value of visual elements in web search. | Marilyn Ostergren, Seung-yon Yu, Efthimis N. Efthimiadis |
| 2009 | CIKM | Analyzing and evaluating query reformulation strategies in web search logs. | Jeff Huang, Efthimis N. Efthimiadis |
| 2008 | CIKM | How do Greeks search the web?: a query log analysis study. | Efthimis N. Efthimiadis |
| 2008 | CIKM | Measuring search engine quality in image queries in 10 non-English languages: an exploratory study. | Fotis Lazarinis, Efthimis N. Efthimiadis |
| 2007 | SIGIR | IR-Toolbox: an experiential learning tool for teaching IR. | Efthimis N. Efthimiadis, Nathan G. Freier |
| 2005 | SIGIR | Search engines and how students think they work. | Efthimis N. Efthimiadis, David G. Hendry |
| 2003 | DC | PB Core-the Public Broadcasting Metadata Initiative: Progress Report. | Alison M. While, Alan Baker, Marty Bloss, Paul E. Burrows, Efthimis N. Efthimiadis, Marcia Brooks, David MacCarn, Thom Shepard, Cate Twohill |
| 2000 | SIGIR | The effect of query type on subject searching behavior of image databases: an exploratory study. | Efthimis N. Efthimiadis, Raya Fidel |
| 1999 | SIGIR | Applying User Research Directly to Information System Design (panel session). | Marcia J. Bates, Raya Fidel, Efthimis N. Efthimiadis, Annelise Mark Pejtersen |
| 1999 | SIGIR | Web Searching Behavior of Aerospace Engineers (poster abstract). | Raya Fidel, Efthimis N. Efthimiadis |
| 1993 | SIGIR | A User-Centered Evaluation of Ranking Algorithims for Interactive Query Expansion. | Efthimis N. Efthimiadis |