1. [4]J. L. Nicholson : "The Effects of International Trade on the Measurements of Real National Income", paper prepared for the Sixth Conference of the Inter-national Association for Research in Income and Wealth, 1959 .
2. [5]R. C. Geary, and R. W. Burge , "Balancing of a System of National Accounts in Real Terms", paper presented to the Fifth Conference of the IARIW, De Pietersberg, 1957 . "Productivity Aspects of Accounts Deflation",Income and Wealth, Series IX, London 1961. See also R. W. Burge, "Deflation within an Accounting Framework",Income and Wealth, Series IX, London 1961, and "A System of Price and Quantity Indexes for National Accounts", United Nations, E/CN. 3/L46,27. Dec. 1957.