Paert, Irina, and James M. White. “Letters of Orthodox Priests about the German Occupation of Estonia During the First World War”. Quaestio Rossica 8, no. 1 (April 1, 2020): 222–241. Accessed December 6, 2021. https://qr.urfu.ru/ojs/index.php/qr/article/view/qr.458.