Sippel, Maike (2010): Cities in Germany and their climate commitments: More hype than substance? Unpublished.
Sippel, Maike and Michaelowa, Axel (2009): Does Global Climate Policy Promote Low-Carbon Cities? Lessons Learnt From The CDM. Published in: CIS Workings Paper Series No. 49 (November 2009)
Sippel, Maike and Jenssen, Till (2009): What about local climate governance? A review of promise and problems. Published in: Social Science Research Network (November 2009)
