We prove that the normalization rule in Bond and Syropoulos (1996, Journal of International Economics 40, 411-437) that sets the world price of good 1 as the numéraire causes asymmetry in the Nash equilibrium. Such rule contradicts their symmetric assumption when one derives other blocs'...

The recent literature on congestion pricing with large agents contains a remarkable inconsistency: though agents are large enough to recognize self-imposed congestion and exert market power over prices, they do not take into account the impact of their own actions on the magnitude of congestion...