Requirement Changes and Project Success: The Moderating Effects of Agile Approaches in System Engineering Projects. - Sabine Maierhofer; Ernst Stelzmann; Markus Kohlbacher; Björn Fellner (EuroSPI, 2010)

Agility Meets Systems Engineering: A Catalogue of Success Factors from Industry Practice. - Ernst Stelzmann; Christian Kreiner; Gunther Spork; Richard Messnarz; Frank König (EuroSPI, 2010)