Geo-referencing of Ethnic Groups (GREG) dataset

Cited from the dataset's website:

Relying on maps and data drawn from the classical Soviet Atlas Narodov Mira, the “Geo-referencing of ethnic groups” (GREG) dataset employs geographic information systems (GIS) to represent group territories as polygons. The GREG dataset consists of 8969 polygons and is provided in ESRI shapefile format.

Used by:

• Esteban et al. (2015) to measure the endowment of natural resources by ethnic group.
• Alesina et al. (2016) to measure inequality across ethnic groups within each country.