Hettich, PeterPeterHettichZürcher, LauraLauraZürcher2023-04-132023-04-132017https://www.alexandria.unisg.ch/handle/20.500.14171/10310710.21552/epppl/2017/4/10enPublic ProcurementPublic-Private-PartnershipPPPSwitzerland Developments in October 2016 – September 2017journal article