The aim of this study is to provide a comprehensive discussion of the use of the Ellison and Glaeser index and subsequently to carry out a descriptive analysis of the geographical concentration of the manufacturing sector in Belgium. To assess the degree of concentration, individual plant data on wage and salary earners are used, with a relatively fine geographical breakdown (districts and townships). It is shown that more than 30% of the industries are excessively agglomerated.
Bertinelli, L., & Decrop, A. (2005). Geographical agglomeration: Ellison and Glaeser’s index applied to the case of Belgian manufacturing industry. Regional Studies, 39(5), 567-583. https://doi.org/10.1080/00343400500151806 (Original work published 2005)