Variability issues in the evolution of information system ecosystems. - Hendrik Brummermann; Markus Keunecke; Klaus Schmid (VaMoS, 2011)

Formalizing distributed evolution of variability in information system ecosystems. - Hendrik Brummermann; Markus Keunecke; Klaus Schmid (VaMoS, 2012)

Managing the Evolution and Customization of Database Schemas in Information System Ecosystems. - Hendrik Brummermann; Markus Keunecke; Klaus Schmid (CAiSE, 2013)

The feature pack approach: systematically managing implementations in software ecosystems. - Markus Keunecke; Hendrik Brummermann; Klaus Schmid (VaMoS, 2014)