The Semantics of "Spirituality" and Related Self-identifications: A Comparative Study in Germany and the USA
In: Archive for the Psychology of Religion, Jg. 35 H. 1, S. 71-1002013

Spiritualität – und die Frage nach der verlorenen Dimension
In: Deutsches Pfarrerblatt, Jg. 116 H. 112016

"Spirituality" as Privatized Experience-Oriented Religion: Empirical and Conceptual Perspectives
In: Implicit Religion, Jg. 14 H. 4, S. 433-4532011
