Tariff adjustments in preferential trade agreements / Eric W. Bond, Constantinos Syropoulos -- More (or less) on necessarily welfare-enhancing free trade areas / Martin Richardson, Niven Winchester -- Pareto-improving trading clubs without income transfers / Kazumichi Iwasa, Raymond Riezman,...

Using a two-factor (labor and capital), two-good (shift-working and non shiftworking commodities) model with two countries (Home and Foreign) which are located in different time zones, we highlight the impact of trade in labor services (via communication networks) on the comparative advantage of...