Received literature have shown that if competing networks are restricted to linear and uniform pricing, high access charges can facilitate collusion; a result that breaks down if we allow for non-linear and discriminatory pricing, however. In this paper we add unbalanced calling pattern to the...

Objective: Targeting hospital treatment at patients with high priority would seem to be a natural policy response to the growing gap between what can be done and what can be financed in the specialist health care sector. The paper examines the distributionalconsequences of this policy. Method:...

There still seems to be some confusion about the consequences of normalisations in the optimal taxation litterature. We claim that: 1) Normalisations do not matter for the real solution of optimal taxation problem. 2) Normalisations do matter for good characterisations of the solutions to...

We analyze and compare inequity in use of physician visits (GP and specialists) in Norway based on data from the Surveys of Living Conditions for the years 2000, 2002 and 2005. Within this period the Norwegian public health care system underwent two major reforms, both aimed at ensuring...

The anti-corruption reform in the Tanzanian tax bureaucracy in the mid-1990s was apparently a short-lived success. In the wake of the reform, a number of “tax experts” established themselves in the market, many of them being laid off tax bureaucrats. We argue that middle-men can undermine...

We examine an evolutionary model of equilibrium selection, where all individuals interact with each other, recurrently playing a strictly supermodular game. Individuals play (myopic) best responses to the current population profile, occa- sionally they pick an arbitrary strategy at random. To...

Abstract. This paper considers a fairly large class of noncooperative games in which strategies are jointly constrained. When what is called the Ky Fan or Nikaidô-Isoda function is convex-concave, selected Nash equilibria correspond to diagonal saddle points of that function. This feature is...

It is not uncommon that publicly employed physicians also have income from work outside the hospital, often termed moonlighting. There is little empirical evidence of such activity. In this paper we investigate which factors that may influence physicians’ choice of work between the public...

This paper studies measurement of welfare e¤ects, transient and permanent, of stabilizing or deregulating prices in Cobweb-like settings. As in Cobweb-models, producers must commit inputs in face of uncertainty. Here, however, we consider producers who are concerned with adaptations of inputs...

Abstract. Exchange of risks is considered here as a transferableutility, cooperative game, featuring risk averse players. Like in competitive equilibrium, a core solution is determined by shadow prices on state-dependent claims. And like in finance, no risk can properly be priced only in terms...