Becker (2008a): Interjurisdictional Competition and Public-Sector Modernisation - Theory and Empirics. Faculty for Economic and Social Sciences, University of Rostock. December 2008 (magna cum laude).
For the “book”, see http://nbn-resolving.de/urn:nbn:de:gbv:28-diss2009-0027-6.
A short summary (in german) is here (PDF, 732 KB).