Kortström, Jari, Marja Uski, and Kati Oinonen. “The Finnish National Seismic Network”. Summary of the Bulletin of the International Seismological Centre 52, no. I (July 20, 2018): 41 - 52. Accessed April 23, 2019. http://ftp.iaspei.org/index.php/summary/article/view/26.