Financial Flows versus Capital Spending: Alternative Measures of U.S.-Canadian Investment and Trade in the Analysis of Taxes

Harry Grubert and John Mutti, International Economic Transactions: Issues in Measurement and Empirical Research (University of Chicago Press, 1991), chap. 8, https://www.nber.org/books-and-chapters/international-economic-transactions-issues-measurement-and-empirical-research/financial-flows-versus-capital-spending-alternative-measures-us-canadian-investment-and-trade.