Zigmunde, Alīda, and Maija Pozemkovska. “The Role of the Riga Latvian Society in the Life of Students and Graduates of the Riga Polytechnicum Riga Polytechnic Institute (1862–1919)”. History of Engineering Sciences and Institutions of Higher Education 2 (November 1, 2018): 24–44. Accessed March 6, 2026. https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2018.003.