2021

• Leonardo Passos, Rodrigo Queiroz, Mukelabai Mukelabai, Thorsten Berger, Sven Apel, Krzysztof Czarnecki, and Jesus Alejandro Padilla. A Study of Feature Scattering in the Linux Kernel. IEEE Transactions on Software Engineering (TSE), 47(1):146–164, January 2021.
   

2019

• Thomas Thüm, André van Hoorn, Sven Apel, Johannes Bürdek, Sinem Getir, Robert Heinrich, Reiner Jung, Matthias Kowal, Malte Lochau, Ina Schaefer, and Jürgen Walter. Performance Analysis Strategies for Software Variants and Versions. In Managed Software Evolution, pages 175–206. Springer, 2019.
   
• Christian Kaltenecker, Alexander Grebhahn, Norbert Siegmund, Jianmei Guo, and Sven Apel. Distance-Based Sampling of Software Configuration Spaces. In Proceedings of the International Conference on Software Engineering (ICSE), pages 1084–1094. IEEE, May 2019. Acceptance rate: 21% (109 / 529).
   

2018

• Jianmei Guo, Dingyu Yang, Norbert Siegmund, Sven Apel, Atrisha Sarkar, Pavel Valov, Krzysztof Czarnecki, Andrzej Wasowski, and Huiqun Yu. Data-Efficient Performance Learning for Configurable Systems. Empirical Software Engineering (EMSE), 23(3):1826–1867, June 2018.
   
• Olaf Leßenich, Janet Siegmund, Sven Apel, Christian Kästner, and Claus Hunsen. Indicators for Merge Conflicts in the Wild: Survey and Empirical Study. Automated Software Engineering, 25(2):279–313, May 2018. Online version at SharedIt.
   
• Flavio Medeiros, Marcio Ribeiro, Rohit Gheyi, Sven Apel, Christian Kästner, Bruno Ferreira, Luiz Carvalho, and Baldoino Fonseca. Discipline Matters: Refactoring of Preprocessor Directives in the #ifdef Hell. IEEE Transactions on Software Engineering (TSE), 44(5):453–469, May 2018.
   

2017

• Olaf Leßenich, Sven Apel, Christian Kästner, Georg Seibt, and Janet Siegmund. Renaming and Shifted Code in Structured Merging: Looking Ahead for Precision and Performance. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 543–553. IEEE, November 2017. Acceptance rate (full papers): 21% (67 / 322).
   
• Mitchell Joblin, Sven Apel, and Wolfgang Mauerer. Evolutionary Trends of Developer Coordination: A Network Approach. Empirical Software Engineering (EMSE), 22(4):2050–2094, August 2017. Online version at SharedIt.
   
• Mitchell Joblin, Sven Apel, Claus Hunsen, and Wolfgang Mauerer. Classifying Developers into Core and Peripheral: An Empirical Study on Count and Network Metrics. In Proceedings of the International Conference on Software Engineering (ICSE), pages 164–174. IEEE, May 2017. Acceptance rate: 16% (68 / 415).
   
• Rodrigo Queiroz, Leonardo Passos, Marco Tulio Valente, Claus Hunsen, Sven Apel, and Krzysztof Czarnecki. The Shape of Feature Code: An Analysis of Twenty C-Preprocessor-Based Systems. Software and Systems Modeling (SoSyM), 16(1):77–96, February 2017. Online version at SharedIt.
   

2016

• Gabriel Ferreira, Momin Malik, Christian Kästner, Jürgen Pfeffer, and Sven Apel. Do #ifdefs Influence the Occurrence of Vulnerabilities? An Empirical Study of the Linux Kernel. In Proceedings of the International Software Product Line Conference (SPLC), pages 65–73. ACM, September 2016. Acceptance rate (full papers): 39% (17 / 44).
   
• Leonardo Passos, Leopoldo Teixeira, Nicolas Dintzner, Sven Apel, Andrzej Wasowski, Krzysztof Czarnecki, Paulo Borba, and Jianmei Guo. Coevolution of Variability Models and Related Software Artifacts: A Fresh Look at Evolution Patterns in the Linux Kernel. Empirical Software Engineering (EMSE), 21(4):1744–1793, August 2016. Online version at SharedIt.
   
• Stefan Sobernig, Sven Apel, Sergiy Kolesnikov, and Norbert Siegmund. Quantifying Structural Attributes of System Decompositions in 28 Feature-oriented Software Product Lines: An Exploratory Study. Empirical Software Engineering (EMSE), 21(4):1670–1705, August 2016.
   
• Gabriel Ferreira, Momin M. Malik, Christian Kästner, Jürgen Pfeffer, and Sven Apel. Do #ifdefs Influence the Occurrence of Vulnerabilities? An Empirical Study of the Linux Kernel. Computing Research Repository (CoRR), Number 1605.07032, June 2016.
   
• Barbara Paech, Sven Apel, Lars Grunske, and Christian Prehofer. Empirische Forschung zu Software-Evolution: Bestandsaufnahme und Vision aus dem DFG-Schwerpunktprogramm Design for Future – Managed Software Evolution. Informatik-Spektrum, 39(3):186–193, May 2016.
   
• Mitchell Joblin, Sven Apel, Claus Hunsen, and Wolfgang Mauerer. Classifying Developers into Core and Peripheral: An Empirical Study on Count and Network Metrics. Computing Research Repository (CoRR), Number 1604.00830, May 2016.
   
• Claus Hunsen, Bo Zhang, Janet Siegmund, Christian Kästner, Olaf Leßenich, Martin Becker, and Sven Apel. Preprocessor-Based Variability in Open-Source and Industrial Software Systems: An Empirical Study. Empirical Software Engineering (EMSE), 21(2):449–482, April 2016.
   
• Bruno Cafeo, Claus Hunsen, Alessandro Garcia, Sven Apel, and Jaejoon Lee. Segregating Feature Interfaces to Support Software Product Line Maintenance. In Proceedings of the International Conference on Modularity (MODULARITY), pages 1–12. ACM, March 2016. Acceptance rate: 37% (10 / 27).
   
• Malte Lochau, Johannes Bürdek, Stefan Bauregger, Andreas Holzer, Alexander von Rhein, Sven Apel, and Dirk Beyer. On Facilitating Reuse in Multi-goal Test-Suite Generation for Software Product Lines. In Proceedings of Software Engineering – Fachtagung des GI-Fachbereichs Softwaretechnik, LNI, pages 81–82. GI, February 2016.
   

2015

• Mitchell Joblin, Sven Apel, and Wolfgang Mauerer. Evolutionary Trends of Developer Coordination: A Network Approach. Computing Research Repository (CoRR), Number 1510.06988, November 2015.
   
• Andreas Wölfl, Norbert Siegmund, Sven Apel, Harald Kosch, Johann Krautlager, and Guillermo Weber-Urbina. Generating Qualifiable Avionics Software: An Experience Report. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 726–736. IEEE, November 2015. Acceptance rate (full papers): 21% (60 / 289).
   
• Olaf Leßenich, Sven Apel, and Christian Lengauer. Balancing Precision and Performance in Structured Merge. Automated Software Engineering, 22(3):367–397, September 2015.
   
• Norbert Siegmund, Alexander Grebhahn, Sven Apel, and Christian Kästner. Performance-Influence Models for Highly Configurable Systems. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 284–294. ACM, August 2015. Acceptance rate: 25% (74 / 291).
   
• Mitchell Joblin, Wolfgang Mauerer, Sven Apel, Janet Siegmund, and Dirk Riehle. From Developer Networks to Verified Communities: A Fine-Grained Approach. In Proceedings of the International Conference on Software Engineering (ICSE), pages 563–573. IEEE, May 2015. Acceptance rate: 19% (84 / 452).
   
• Johannes Bürdek, Malte Lochau, Stefan Bauregger, Andreas Holzer, Alexander von Rhein, Sven Apel, and Dirk Beyer. Facilitating Reuse in Multi-Goal Test-Suite Generation for Software Product Lines. In Proceedings of the International Conference on Fundamental Approaches to Software Engineering (FASE), volume 9033 of LNCS, pages 84–99. Springer, April 2015. Acceptance rate (23 / 82): 28%.
   
• Leonardo Passos, Jesus Padilla, Thorsten Berger, Sven Apel, Krzysztof Czarnecki, and Marco Tulio Valente. Feature Scattering in the Large: A Longitudinal Study of Linux Kernel Device Drivers. In Proceedings of the International Conference on Modularity (MODULARITY), pages 81–92. ACM, March 2015. Acceptance rate: 48% (12 / 25). Best Paper Award.
   

2014

• Sergiy Kolesnikov, Judith Roth, and Sven Apel. On the Relation Between Internal and External Feature Interactions in Feature-oriented Product Lines: A Case Study. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 1–8. ACM, September 2014.
   
• Rodrigo Queiroz, Leonardo Passos, Marco T. Valente, Sven Apel, and Krzysztof Czarnecki. Does Feature Scattering Follow Power-law Distributions?: An Investigation of Five Pre-processor-based Systems. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 23–29. ACM, September 2014.
   
• Stefan Sobernig, Sven Apel, Sergiy Kolesnikov, and Norbert Siegmund. Quantifying Structural Attributes of System Decompositions in 28 Feature-oriented Software Product Lines: An Exploratory Study. Technical Report 2014/01, Institute for Information Systems and New Media, WU Vienna University of Economics and Business, July 2014.
   
• Thomas Thüm, Sven Apel, Christian Kästner, Ina Schaefer, and Gunter Saake. A Classification and Survey of Analysis Strategies for Software Product Lines. ACM Computing Surveys (CSUR), 47(1):6, June 2014.
   

2013

• Jianmei Guo, Krzysztof Czarnecki, Sven Apel, Norbert Siegmund, and Andrzej Wasowski. Variability-Aware Performance Prediction: A Statistical Learning Approach. In Proceedings of the International Conference on Automated Software Engineering (ASE), pages 301–311. IEEE, November 2013. Acceptance rate (full papers): 16% (51 / 317).
   
• Sven Apel, Sergiy Kolesnikov, Norbert Siegmund, Christian Kästner, and Brady Garvin. Exploring Feature Interactions in the Wild: The New Feature-Interaction Challenge. In Proceedings of the International Workshop on Feature-Oriented Software Development (FOSD), pages 1–8. ACM, October 2013.
   
• Sergiy Kolesnikov, Alexander von Rhein, Claus Hunsen, and Sven Apel. A Comparison of Product-based, Feature-based, and Family-based Type Checking. In Proceedings of the International Conference on Generative Programming: Concepts & Experiences (GPCE), pages 115–124. ACM, October 2013. Acceptance rate (full papers): 30% (17 / 57).
   
• Sandro Schulze, Jörg Liebig, Janet Siegmund, and Sven Apel. Does the Discipline of Preprocessor Annotations Matter? A Controlled Experiment. In Proceedings of the International Conference on Generative Programming: Concepts & Experiences (GPCE), pages 65–74. ACM, October 2013. Acceptance rate (full papers): 30% (17 / 57). GPCE Most Influential Paper Award 2023.
   
• Norbert Siegmund, Alexander von Rhein, and Sven Apel. Family-Based Performance Measurement. In Proceedings of the International Conference on Generative Programming: Concepts & Experiences (GPCE), pages 95–104. ACM, October 2013. Acceptance rate (full papers): 30% (17 / 57).
   
• Jörg Liebig, Alexander von Rhein, Christian Kästner, Sven Apel, Jens Dörre, and Christian Lengauer. Scalable Analysis of Variable Software. In Proceedings of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on the Foundations of Software Engineering (ESEC/FSE), pages 81–91. ACM, August 2013. Acceptance rate: 20% (51 / 251).
   
• Sergiy Kolesnikov, Sven Apel, Norbert Siegmund, Stefan Sobernig, Christian Kästner, and Semah Senkaya. Predicting Quality Attributes of Software Product Lines Using Software and Network Measures and Sampling. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 25–29. ACM, January 2013.
   
• Leonardo Passos, Krzysztof Czarnecki, Sven Apel, Andrzej Wasowski, Christian Kästner, Jianmei Guo, and Claus Hunsen. Feature Oriented Software Evolution. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 95–102. ACM, January 2013.
   
• Alexander von Rhein, Sven Apel, Christian Kästner, Thomas Thüm, and Ina Schaefer. The PLA Model: On the Combination of Product-Line Analyses. In Proceedings of the International Workshop on Variability Modelling of Software-intensive Systems (VaMoS), pages 73–80. ACM, January 2013.