Adolfo Atchabahian, Special Consultant to Tax Management, Doctor in Economic Science, University of Buenos Aires; former Judge of the National Tax Court in Argentina (1960-1967) and Professor of Public Finance and Tax Law at the University of Buenos Aires (1957-1967 and 1980-1983); tax expert and Director at the Office of Public Finance of the Organization of American States (1967-1976); former consultant at the U.N. Center on Transnational Corporations; consultant of the Inter-American Development Bank and the International Monetary Fund; member of the International Fiscal Association and former member of its Permanent Scientific Committee; member and former president of the Argentinean Association of Fiscal Studies; author of several books and many articles published in Argentina and abroad relating to economic, public accounting and tax matters; former chief editor of Derecho Fiscal and Derecho Tributario (1981-1998), monthly tax reviews, and Impuestos Nacionales, a loose-leaf publication updated fortnightly (1984-1998); Director of Periódico Económico Tributario, a fortnightly publication, published in Buenos Aires under the auspices of Editorial La Ley-Thomson (2003- ); and Professor of Tax Law in graduate courses for lawyers and certified public accountants in different public and private universities throughout Argentina.