References ARMINGTON, Paul Stanley (1969) - A Theory of Demand for Products Distinguished by Place of Production. International Monetary Fund Staff Papers, vol. 16, No. 1, March, pp. 159–178. ATURUPANE, Chonira, DJANKOV, Simeon, HOEKMAN, Bernard (1999) – Horizontal and Vertical Intra-industry Trade between Eastern Europe and the European Union. Weltwirtschaftliches Archiv, vol. 135, No. 1, March, pp. 62–81. BENKOVSKIS, Konstantins, RIMGAILAITE, Ramune (2011) – The Quality and Variety of Exports from the New EU Member States: Evidence from Very Disaggregated Data. Economics of Transition, vol. 19, No. 4, October, pp. 723–747. BENKOVSKIS, Konstantins, WORZ, Julia (2011) – How Does Quality Impact on Import Prices? OeNB Working Paper, No. 175, December, 45 p. BLONIGEN, Bruce A., SODERBERY, Anson (2010) – Measuring the Benefits of Foreign Product Variety with an Accurate Variety Set. Journal of International Economics, vol. 82, No. 2, November, pp. 168–180. BRODA, Christian, WEINSTEIN, David E. (2006) – Globalization and the Gains from Variety. Quarterly Journal of Economics, vol. 121, No. 2, pp. 541–585. DE GRAUWE, Paul (ed.; 2010) – Dimensions of Competitiveness. CESifo Seminar Series, The MIT Press, Cambridge Massachusetts, 304 p. DIEWERT, Erwin W. (1993a) – Index Numbers. In: Essays in Index Number Theory, Volume I. Edited by Diewert, E. W. and Nakamura, A. O., Chapter 5, Elsevier Science Publishers B. V., pp. 71–108. DIEWERT, Erwin W. (1993b) – The Economic Theory of Index Numbers: A Survey. In: Essays in Index Number Theory, Volume I. Edited by Diewert, E. W. and Nakamura, A. O., Chapter 7, Elsevier Science Publishers B. V., pp. 177–228. DIXIT, Avinash K., NORMAN, Victor (1980) – Theory of International Trade: A Dual, General Equilibrium Approach. Cambridge : Cambridge University Press, 339 p. DULLECK, Uwe, FOSTER, Neil, STEHRER, Robert, WORZ, Julia (2005) – Dimensions of Quality Upgrading – Evidence for CEECs. Economics of Transition, vol. 13, No. 1, January, pp. 51–76. FABRIZIO, Stefania, IGAN, Deniz, MODY, Ashoka (2007) – The Dynamics of Product Quality and International Competitiveness. IMF Working Paper, No. WP/07/97, 35 p. FEENSTRA, Robert C. (1994) – New Product Varieties and the Measurement of International Prices. American Economic Review, vol. 84, No. 1, March, pp. 157–177. FLAM, Harry, HELPMAN, Elhanan (1987) – Vertical Product Differentiation and North-South Trade. American Economic Review, vol. 77, No. 5, December, pp. 810–822. HALLAK, Juan Carlos, SCHOTT, Peter K. (2008) – Estimating Cross-Country Differences in Product Quality. NBER Working Paper, No. 13807, February, 57 p. HUMMELS, David, KLENOW, Peter J. (2005) – The Variety and Quality of a Nation's Exports. American Economic Review, vol. 95, No. 3, pp. 704–723. LANDESMANN, Michael A., STEHRER, Robert (2002) – Evolving Competitiveness of CEECs in an Enlarged Europe. Rivista di Politica Economia, vol. 92, No. 1, pp. 23–87. LEAMER, Edward E. (1981) – Is it a Demand Curve, or is it a Supply Curve? Partial Identification through Inequality Constraints. Review of Economics and Statistics, vol. 63, No. 3, pp. 319–327. MOHLER, Lucas, SEITZ, Michael (2010) – The Gains from Variety in the European Union. Munich Discussion Paper, No. 2010-24, April, 27 p. PIERCE, Justin R., SCHOTT, Peter K. (2009) – Concording U. S. Harmonized System Categories over Time. NBER Working Paper, No. 14837, April, 20 p. REINSDORF, Marshall B., DORFMAN, Alan H. (1999) – The Sato-Vartia Index and the Monotonicity Axiom. Journal of Econometrics, vol. 90, No. 1, May, pp. 45–61. SALA-i-MARTIN, Xavier (2010) – The Economics behind the World Economic Forum's Global Competitiveness Index. In: Dimensions of Competitiveness. Ed. by De Grauwe, P., Chapter 1, CESifo Seminar Series, The MIT Press, Cambridge Massachusetts, pp. 1–18. SATO, Kazuo (1976). The Ideal Log-Change Index Number. Review of Economics and Statistics, vol. 58, No. 2, May 1976, pp. 223–228. SHEU, Gloria (2011) – Price, Quality, and Variety: Measuring the Gains from Trade in Differentiated Products. Unpublished Manuscript, US Department of Justice, September. VARTIA, Yrjo O (1976). Ideal Log-Change Index Numbers. Scandinavian Journal of Statistics, vol. 3, No. 3, 1976, pp. 121–126.