The influence of cross-border mobility on the COVID-19 epidemic in Nordic countries. - Mikhail Shubin; Hilde Kjelgaard Brustad; Jørgen Eriksson Midtbø; Felix Günther 003; Laura Alessandretti; Tapio Ala-Nissila; Gianpaolo Scalia Tomba; Mikko Kivelä; Louis Yat Hin Chan; Lasse Leskelä (PLoS Comput. Biol., 2024)