TY - JOUR A1 - Marco G. Ercolani TI - Hidden Economies and the Socially Optimal Fiscal-Tax to Liquidity-Tax Ratio PY - 2007/03/12 JA - Economics: The Open-Access, Open Assessment E-Journal VL - 1 IS - 2007-10 UR - http://www.economics-ejournal.org/economics/discussionpapers/2007-10 ER -