Changes in the Ethnic and Demographic Profile of the Population in Eastern Stara Planina Region - Sustainable Development in Mountain Regions: Southeastern Europe - page 235

For example, “monoethnic” were considered settlements with share of population
belonging to one ethnic group 90% of the total or more. Thus, settlements with
100% monoethnic population and practically bi-ethnic settlements, in which the
minority group is sometimes almost 10% of the total population, find themselves
Fig. 19.6 Share of settlements of various types of ethnic structure in Eastern Stara planina region
(1965, 1992, and 2001)
Fig. 19.7 Classification of settlements in Eastern Stara planina region according to their ethnic
structure (as of 2001): 1 - Bulgarian; 2 - Turkish; 3 - Roma; 4 - Bulgarian-Turkish; 5 - Turkish-
Bulgarian; 6 - Turkish-Roma; 7 - Bulgarian-Roma; 8 - Mixed