* "The Measurement of National Wealth: Discussion," (with Milton Gilbert; J. R. N. Stone; Francois Perroux; D. K. Lieu; Evelpides; Francois Divisia; Tinbergen; Kuznets; Smithies; Shirras; MacGregor), "Econometrica," Vol.
* "The Measurement of National Wealth: Discussion, " (with Milton Gilbert; J. R. N. Stone; Francois Perroux; D. K. Lieu; Evelpides; Francois Divisia; Tinbergen; Kuznets; Smithies; Shirras; MacGregor), "Econometrica," Vol.