摘要：Market concentration is a term that distribution of customer and seller in a specified sector by size and by number. There is a reverse relation between the number of company and market concentration. The more the market concentration increases, the more the competition decreases. In this study the structures of mobile telecommunication market and market con-centration rates are tried to be determined by Herfindahl-Hirschman Index method in Turk-ish Republics in Central Asia.
关键词：Market Concentration; Competition; Mobile Telecommunication Market.
