Wagner, FabioPreuss, HolgerKönecke, Thomas2021-11-022021-11-022021https://openscience.ub.uni-mainz.de/handle/20.500.12030/6432engCC-BY-4.0https://creativecommons.org/licenses/by/4.0/796 Sport796 Athletic and outdoor sports and gamesA central element of Europe’s football ecosystem : competitive intensity in the “big five”Zeitschriftenaufsatz