Joint bidding is the practice of two or more independent suppliers submitting a single bid, a widespread practice in private and public procurement. This practice may generate efficiencies through synergies and information sharing, but may also be abused to reduce the number of competitors...

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...