@phdthesis{Bilstein2013, author = {Nicola Bilstein}, title = {Rethinking co-production in service : conceptual and empirical investigations of the antecedents and outcomes of mandatory and optional co-production [cumulative dissertation]}, type = {doctoralthesis}, school = {Katholische Universit{\"a}t Eichst{\"a}tt-Ingolstadt}, year = {2013}, }