Causality measures between neural signals from invasively and non-invasively obtained local field potentials in humans
Jülich : Forschungszentrum Jülich, Zentralbibliothek, 2010
Central exit examinations increase performance ... but take the fun out of mathematics
Rev. version, Wuppertal : Bergische Univ. Wuppertal, 2008
A comparative analysis of the public transport systems of Santiago de Chile, London, Berlin and Madrid
what can Santiago learn from the European experiences?2007

Corruption in organizations
some outlines for researchWuppertal : Fachbereich Wirtschaftswissenschaft, Berg. Univ. - Gesamthochschule Wuppertal, 2005
