| Evidence of a post-GST increase in the underground economy PS Spiro Canadian Tax Journal 41, 247-58, 1993 | 143 | 1993 |
| The Impact Of Interest Rate Changes On Stock Price Volatili PS Spiro Journal of Portfolio Management 16 (2), 63, 1990 | 48 | 1990 |
| Monetary estimates of the underground economy: a critical evaluation PS Spiro The Canadian Journal of Economics/Revue canadienne d'Economique 29, S171-S175, 1996 | 32 | 1996 |
| Tax policy and the underground economy PS Spiro Size, causes and consequences of the underground economy, 179-201, 2018 | 31 | 2018 |
| Estimating the underground economy: A critical evaluation of the monetary approach PS Spiro Can. Tax J. 42, 1059, 1994 | 25 | 1994 |
| Real interest rates and investment and borrowing strategy PS Spiro (No Title), 1989 | 25 | 1989 |
| Taxes, deficits, and the underground economy PS Spiro The underground economy: Global evidence of its size and impact 201, 1997 | 24 | 1997 |
| The elusive effect of fiscal deficits on interest rates: comment on Tanzi PS Spiro Staff Papers (International Monetary Fund) 34 (2), 400-403, 1987 | 20 | 1987 |
| Tax Policy and the Underground Economy. Chapter 10 in Christopher Bajada and Friedrich Schneider (Eds.). Size, Causes and Consequences of the Underground Economy PS Spiro Aldershot, England: Ashgate Publishing, 2005 | 13 | 2005 |
| The effect of government debt on short-term real interest rates: Comment on Findlay PS Spiro Staff Papers (International Monetary Fund) 37 (4), 881-888, 1990 | 13 | 1990 |
| Challenges in shifting Canadian taxation toward consumption JR Kesselman, PS Spiro Can. Tax J. 62, 1, 2014 | 12 | 2014 |
| Challenges in shifting Canadian taxation toward consumption JR Kesselman, PS Spiro Can. Tax J. 62, 1, 2014 | 12 | 2014 |
| Low water blues: An economic impact assessment of future low water levels in the Great Lakes and St. Lawrence River R Shlozberg, R Dorling, P Spiro Mowat Centre for Policy Innovation, 2014 | 11 | 2014 |
| Improving a group forecast by removing the conservative bias in its components PS Spiro International Journal of Forecasting 5 (1), 127-131, 1989 | 10 | 1989 |
| Low water blues: an economic impact assessment of future low water levels in the Great Lakes and St R Shlozberg, R Dorling, P Spiro Lawrence River, 2014 | 9 | 2014 |
| A sectoral analysis of Ontario's weak productivity growth PS Spiro International Productivity Monitor, 2013 | 8 | 2013 |
| Evidence on inflation expectations from Canadian real return bonds P Spiro Macroeconomic analysis and policy branch working paper, Ontario Ministry of …, 2003 | 8 | 2003 |
| Foreign borrowing and the real exchange rate PS Spiro Journal of Macroeconomics 12 (4), 611-624, 1990 | 8 | 1990 |
| Public utility finance and the cost of capital: comments on Jenkins PS Spiro Canadian Journal of Economics, 164-171, 1987 | 6 | 1987 |
| Chevron Wins ATS Case. Will Corporations Fight, Not Settle P Spiro OPINIO JURIS, Dec, 2008 | 5 | 2008 |
