Incorporating Application Dependent Information in an Automatic Code Generating Environment. - Robert van Engelen; Ilja Heitlager; Lex Wolters; Gerard Cats (International Conference on Supercomputing, 1997)

A Practical Model for Measuring Maintainability. - Ilja Heitlager; Tobias Kuipers; Joost Visser 001 (QUATIC, 2007)

Interpretation of Source Code Clusters in Terms of the ISO/IEC-9126 Maintainability Characteristics. - Yiannis Kanellopoulos; Christos Tjortjis; Ilja Heitlager; Joost Visser 001 (CSMR, 2008)

Evolving Relationship Structures in Multi-sourcing Arrangements: The Case of Mission Critical Outsourcing. - Ilja Heitlager; Remko Helms; Sjaak Brinkkemper (Global Sourcing Workshop, 2010)

Architectural Tactics to Optimize Software for Energy Efficiency in the Public Cloud. - Sophie Vos; Patricia Lago; Roberto Verdecchia; Ilja Heitlager (ICT4S, 2022)

Unveiling Key Performance Indicators for the Energy Efficiency of Cloud Data Storage. - Pouyeh Banijamali; Iffat Fatima; Patricia Lago; Ilja Heitlager (ICSA-C, 2024)

Experimental Evaluation of Energy Efficiency Tactics in Industry: Results and Lessons Learned. - Markus Funke; Patricia Lago; Esther Adenekan; Ivano Malavolta; Ilja Heitlager (ICSA, 2024)

Experimental Evaluation of Energy Efficiency Tactics in Industry: Results and Lessons Learned. - Markus Funke; Patricia Lago; Esther Adenekan; Ivano Malavolta; Ilja Heitlager (Zenodo, 2024)