market definition such as "acute in-patient care" averages out severe discrepancies that become visible when concentration is … only impact on the level of concentration, while the correlation remains high. Our results underline the need for more …

The paper calculates the concentration in 6 major routes of the "Greek ferry system" (2001-2010), important not only …

This paper examines the understanding of business concentration through the Herfindahl- Hirschman Index (HHI), by … showing that this index is conceptually a model according to which this concentration is the consequence of a renewal process … into differing concentration levels attributable only to the economic activity with which firms vie. As a consequence …