Kroll, N. (2010). ADIGMA - A european initiative on the development of adaptive higher-order variational methods for aerospace applications: Results of a collaborative research project funded by the European Union, 2006-2009. Berlín: Springer.

Kroll, Norbert. ADIGMA - A European Initiative On the Development of Adaptive Higher-order Variational Methods for Aerospace Applications: Results of a Collaborative Research Project Funded By the European Union, 2006-2009. Berlín: Springer, 2010.

Kroll, Norbert. ADIGMA - A European Initiative On the Development of Adaptive Higher-order Variational Methods for Aerospace Applications: Results of a Collaborative Research Project Funded By the European Union, 2006-2009. Berlín: Springer, 2010.