Filipow, Krzysztof, and Zbyshek Shustek. “TWO ALBUMS FROM THE FIRST WORLD WAR - CZECHOSLOVAKIA AND POLAND”. The Ukrainian Numismatic Annual, no. 4 (December 20, 2020): 184-195. Accessed January 27, 2022. https://numismatic-journal.com/index.php/journal/article/view/97.