Institutional reasons for not implementing PPPs in the transport sectorWiden, Kristian; Lember, VeikoCost action TU1001 public private partnerships in transport : trends & theory, 2011 discussion papers2012 / p. 108-121 https://www.researchgate.net/publication/279526636_Institutional_Reasons_for_Not_Implementing_PPPs_in_the_Transport_Sector

The emergence of transport PPPs : context and driversDewulf, G.; Lember, VeikoCost action TU1001 public private partnerships in transport : trends & theory, 2011 discussion papers2012 / p. 138-150 https://forskning.ruc.dk/en/publications/the-emergence-of-transport-ppps-context-and-drivers-i-carbonara-n