Strikes and lock-outs in Sweden between 1903-2005.
<a href="//commons.wikimedia.org/wiki/User:Koyos" title="User:Koyos">Koyos</a>
www.medlingsinstitutet.se, Mikkelsen, F. (1992). Arbejdskonflikter i Skandinavien 1848-1980; Edvinsson, R. (2005). Growth, Accumulation, Crisis: With New Macroeconomic Data for Sweden 1800-2000; www.scb.se.