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C. Brink and P. Heisig, "Analysis of changes in product families considering the combination of hardware and software variants," in Tagungsband Dagstuhl-Workshop MBEES : Modellbasierte Entwicklung eingebetteter Systeme XII, München: Fotiss GmbH, 2016, pp. 50-59 [Online]. Available: https://download.fortiss.org/public/mbees/mbees2016_proceedings.pdf