Paper 1: NATURAL GAS, ECONOMIC AND POLITICS: HOW CAN CHILE PREVENT FUTURE DISRUPTIONS OF ENERGY SUPPLY? (Novemmber 2004) Paper 2: HOW WILL THE LATEST PROPOSAL FOR THE NEW BOLIVIAN HYDROCARBONS TAX REGIME AFFECT TAX REVENUES IN THE LONG TERM? (May 2004) Paper 3: DOES BOLIVIA HAVE SUFFICIENT BARGAINING POWER AGAINST THE MULTINATIONAL PACIFIC LNG IN ORDER TO OBTAIN A SUBSTANTIAL SHARE OF THE ECONOMIC RENT FROM THE LNG PROJECT? (May 2004)