| 2016 | ICISSP | Tax Fraud and Investigation Procedures - Everybody, Every Where, Every Time. | Hans-Joachim Lenz |
| 2016 | ICISSP | Tax Fraud and Investigation: A Framework for a Knowledge Based Methodology. | Hans-Joachim Lenz |
| 2007 | ADBIS | Optimal Query Mapping in Mobile OLAP. | Ilias Michalarias, Hans-Joachim Lenz |
| 2006 | SSDBM | Edits - Data Cleansing at the Data Entry to assert semantic Consistency of metric Data. | Hans-Joachim Lenz, Veit Kppen, Roland M. Mller |
| 2005 | ICDCIT | Dissemination of Multidimensional Data Using Broadcast Clusters. | Ilias Michalarias, Hans-Joachim Lenz |
| 2003 | SSDBM | Entity Level Data Integration by Statistical Methods. | Hans-Joachim Lenz |
| 2001 | SSDBM | OLAP Databases and Aggregation Functions. | Hans-Joachim Lenz, Bernhard Thalheim |
| 2001 | TIME | Best Time and Content for Delay Notification. | Markus Schaal, Hans-Joachim Lenz |
| 1999 | SSDBM | PISA: Performance Models for Index Structures with and without Aggregated Data. | Marcus Jrgens, Hans-Joachim Lenz |
| 1998 | SSDBM | OLAP and Data Warehousing in Statistical Databases (Panel). | St. De Francisci, Oliver Gnther, Hans-Joachim Lenz, Maurizio Lenzerini, Arie Shoshani |
| 1997 | SSDBM | Summarizability in OLAP and Statistical Data Bases. | Hans-Joachim Lenz, Arie Shoshani |
| 1994 | SSDBM | The Conceptual Schema and External Schemata of Metadatabases. | Hans-Joachim Lenz |