The Italian water sector is characterized by the presence of several water companies, with different ownership types; Fabbri and Fraquelli (Empirica 27:65–82, <CitationRef CitationID="CR11">2000</CitationRef>) and Antonioli and Filippini (Util Policy 10:181–187, <CitationRef CitationID="CR2">2001</CitationRef>) have analyzed the presence of economies of scale and scope in the...</citationref></citationref>

The main objective of this paper is to investigate the way subsidization mechanisms affect the cost efficiency of public transit systems, taking into account the role played by the environmental characteristics of each network. A cost frontier model is estimated for a seven-year panel of 44...

Since the publication by Williamson (1968) of his seminal paper on antitrust there has been a growing recognition by regulators of the need to assess trade-offs between merger-related efficiency gains and merger-induced increases in market power. This paper addresses that need by presenting a...