1. Microeconomic Foundations for the Theory of International Comparisons
2. On van Ijzeren’s approach to international comparisons and its properties
3. Board of Trade ,Report on an Enquiry by the Board of Trade into Working Class Rents, Housing and Retail Prices together with the Rates of Wages in Certain Occupations in the Principal Industrial Towns of the United Kingdom, Germany, France, Belgium and the United States, Cd. 3864, 4032, 4512, 5065 and 5609 (London: Printed for H.M. Stationary Office by Darling & Son, 1908 -1911 ).
4. Exact and superlative index numbers
5. The economic theory of index numbers: a survey