Berta, P; Callea, G; Martini, G and Vittadini, G (2009): The effects of upcoding, cream skimming and readmissions on the Italian hospitals efficiency: a population–based investigation. Unpublished.
Malighetti, G; Martini, G; Paleari, S and Redondi, R (2009): The Impacts of Airport Centrality in the EU Network and Inter- Airport Competition on Airport Efficiency. Unpublished.
