Introduction / Nicola Dimitri, Gustavo Piga and Giancarlo Spagnolo -- The variety of procurement practice : evidence from public procurement / Laura Carpineti, Gustavo Piga and Matteo Zanza -- General strategic principles -- When should procurement be centralized? / Nicola Dimitri, Federico Dini...

"Any research study needs a solid design before data collection or analysis can begin. This design ensures that any experimental evidence obtained by a researcher serves its purpose in making the researcher's argument more robust. Just as an architect prepares a blueprint before he approves a...