Švaříčková Slabáková, Radmila. “Heinrich Coudenhove-Kalergi and Mitsuko Aoyama: Travels, Space and Time at the Turn of the 19th and 20th Centuries”. Theatrum historiae, no. 12 (June 30, 2013): 171–187. Accessed May 4, 2024. https://theatrum.upce.cz/index.php/theatrum/article/view/1945.