“…Unsurprisingly, oligopolistic interaction has not been considered as a fundamental ingredient in modelling this issue. In fact, the backbone of the dynamic analysis carried out on this leitmotiv (Markusen, 1975;Sinclair, 1992Sinclair, , 1994Ulph and Ulph, 1994;Wirl, 1994;1995;Hoel and Kverndokk, 1996;Tahvonen, 1996;Rubio and Escriche, 2001) focusses on monopolistic extraction, where this single agent is a cartel (say, OPEC).…”