Rinkevičius, Šarūnas. “Nine Documents, from the Turkish Archives on Konstantin Regel’s Planned Scientific Trip to Turkey in 1933”. History / Istorija 132, no. 4 (May 17, 2024): 119–131. Accessed April 3, 2025. https://ejournals.vdu.lt/index.php/istorijoszurnalas/article/view/6069.