This article identifies the factors that determine innovation in transport PPPs in Spain. Innovation is an important way of achieving efficiency but it is not an intrinsic characteristic of PPP projects. The authors describe the multiple regression model they devised to estimate innovation. The...

This paper sets out to explain how the implementation of an environmental management systems (EMS) conditions the way firms respond to environmental pressures exerted by their stakeholders. While the most common approaches to be found in the literature consider the certification of such systems...