• Professional football clubs and empirical evidence from the COVID-19 crisis : time for sport entrepreneurship?Hammerschmidt, Jonas; Durst, Susanne; Kraus, Sascha; Puumalainen, KaisuTechnological forecasting and social change2021 / art. 120572 https://doi.org/10.1016/j.techfore.2021.120572 https://www.scopus.com/sourceid/14704 https://www.scopus.com/record/display.uri?eid=2-s2.0-85099209951&origin=inward&txGid=ce2533c476dc1838e51e63b800f8fd94 https://jcr.clarivate.com/jcr-jp/journal-profile?journal=TECHNOL%20FORECAST%20SOC&year=2022 https://www.webofscience.com/wos/woscc/full-record/WOS:000618757100009