We use survey data to investigate the determinants of chemical firms' registration for the ISO 14001 standard or the Responsible Care program. We show that most determinants are different for the two systems analyzed: while firm size, previous experience with similar standards, information...

I derive Ramsey optimal prices in one-way access of long-distance operators and enhanced service providers to local loops. As long-distance services and enhanced services become substitutes due to the advance of Internet telephony, the Ramsey principle requires higher access charges assessed on...

We establish four necessary and sufficient conditions for the existence of the Averch-Johnson effect in a generalized version of their famous model of the rate-of-return regulated firm. The four necessary and sufficient conditions are then compared to the two stronger sufficient conditions for...

This paper studies the environmental tax and trade liberalization in a mixed duopolistic market wherein environmental damage is associated with consumption. In particular, we consider the effect of privatization on environmental tax and the effect of trade liberalization on the environment in an...

To increase competition in local telephone markets, the 1996 Telecommunications Act required incumbent firms to lease important inputs to competitors at regulated prices. Defending this so-called stepping-stone hypothesis, the Federal Communications Commission argued that new entrants needed a...

I derive Ramsey optimal prices in one-way access of long-distance operators and enhanced service providers to local loops. As long-distance services and enhanced services become substitutes due to the advance of Internet telephony, the Ramsey principle requires higher access charges assessed on...

This paper constructs an entry and code-sharing alliances game to demonstrate that the alliance between the incumbent carriers may play a significant role of entry deterrence in a given airline network. We show that incumbents can use the alliances as a credible threat to deter the entry of the...

Airports are typically monopolistic providers of aeronautical services. Hence, the widespread privatization of airports within the last 20 years has in general been accompanied by some form of price regulation of aeronautical services. A great deal of attention has been given to the issue of...

n order to analyze competition in gas markets, an intermediate activity of storage is included in a classical model of vertical relations. In that case, firms can inject or withdraw strategically natural gas resource. The access to the storage facility can deteriore the welfare since it incites...

We establish four necessary and sufficient conditions for the existence of the Averch-Johnson effect in a generalized version of their famous model of the rate-of-return regulated firm. The four necessary and sufficient conditions are then compared to the two stronger sufficient conditions for...