Kauppinen, Jarkko, Elli Heikkilä, Jarmo Rusanen, Arvo Naukkarinen, and Toivo Muilu. 2000. “The Connection Between Migration and Regional Structure in Finland Around 1990 - a GIS Viewpoint”. Finnish Yearbook of Population Research 36 (January):163-78. https://doi.org/10.23979/fypr.44952.