Höll, O., Klimburg, A., & Pospisil, J. (2013). Mediating security: Comprehensive approaches to an ambiguous subject : Festschrift for Otmar Höll. Peter Lang.

Höll, Otmar, Alexander Klimburg, and Jan Pospisil. Mediating Security: Comprehensive Approaches to an Ambiguous Subject : Festschrift for Otmar Höll. Frankfurt am Main: Peter Lang, 2013.

Höll, Otmar, et al. Mediating Security: Comprehensive Approaches to an Ambiguous Subject : Festschrift for Otmar Höll. Peter Lang, 2013.