Wezel, Katja. “The Most Successful Trading Hub in Late Imperial Russia: Using Historical GIS to Map Riga As a Global Port City”. Zeitschrift für Ostmitteleuropa-Forschung 70, no. 3 (September 30, 2021): 389–415. Accessed September 16, 2026. https://openjournals.osmikon.de/zfo/article/view/11017.