Law Clerk, Argentine Tax Court, 1990-1993. Publications of several articles on tax law. Panelist for Argentina at ABA's International Tax Seminar (Washington, D.C., 1999). Professor, Public Finance and Tax Law, Universidad de Buenos Aires School of Law, 1992-1994. Professor, Tax Planning and Financial Law, Universidad Católica Argentina, School of Law Graduate Program, 2000. Head Counsel of the Deputy Director General, Argentine Internal Revenue Service, 1995-1996.