An article entitled “Public procurement for innovation to help meet social challenges: a review and a case study” has been published on 28 February, 2018 in Science and Public Policy. The authors are Joeri H. Wesseling and Charles Edquist. It deals with how public procurement can contribute to meeting societal challenges by presenting a literature review and a case study on the procurement of radically new flood barrier technology, using event history mapping analysis. The article can downloaded here.