The following publications are possibly variants of this publication:
- On the Impact of the Optional Feature Problem: Analysis and Case StudiesChristian Kästner, Sven Apel, Syed Saif ur Rahman, Marko Rosenmüller, Don S. Batory, Gunter Saake. In Proceedings of the 13th International Software Product Line Conference (SPLC). 2009:
- Model Superimposition in Software Product LinesSven Apel, Florian Janda, Salvador Trujillo, Christian Kästner. In Proceedings of the Second International Conference on Model Transformation (ICMT). 2009: [doi]
- Type-Safe Feature-Oriented Product LinesSven Apel, Christian Kästner, Armin Gr{\"o}{\ss}linger, Christian Lengauer. Technical Report MIP-0909, 2009.
- An Overview of Feature-Oriented Software DevelopmentSven Apel, Christian Kästner. Journal of Object Technology (JOT), 8(5), July/August 2009.
- Feature cohesion in software product lines: an exploratory studySven Apel, Dirk Beyer. ICSE 2011: 421-430 [doi]