Detecting contagious spreading of urban innovations on the global city networkNiklas H. Kitzmann, Pawel Romanczuk, Nico Wunderling and Jonathan F. DongesEur. Phys. J. Spec. Top., 231 9 (2022) 1609-1624DOI: https://doi.org/10.1140/epjs/s11734-022-00470-4