Official website: https://wereldtiteldammen.nl/
Previous games between Boomstra and Shvartsman.
Column Harm Wiersma in De Telegraaf 01-12-2018.
Announcement in Dagblad van het Noorden 01-12-2018.
Announcement on NOS.nl 01-12-2018.
Announcement in Leeuwarder Courant 01-12-2018.