Kopmann, Julian and Kock, Alexander and Killen, Catherine and Gemünden, Hans Georg (2017):
The role of project portfolio management in fostering both deliberate and emergent strategy.
In: International Journal of Project Management, 35 (4), pp. 557-570. [Article]

Midler, Christophe and Killen, Catherine and Kock, Alexander (2016):
Project and Innovation Management: Bridging Contemporary Trends in Theory and Practice.
In: Project Management Journal, 47 (2), pp. 3-7. [Article]

Kopmann, Julian and Kock, Alexander and Killen, Catherine and Gemünden, Hans Georg (2015):
Business Case Control in Project Portfolios - An Empirical Investigation of Performance Consequences and Moderating Effects.
In: IEEE Transactions in Engineering Management, 62 (4), pp. 529-543. [Article]