ZIGMUNDE, Alīda; ŠAPOVALOVS, Oļegs. The activities of factory «Prowodnik» in Riga and its employees – graduates of the Riga Polytechnicum / Riga Polytechnic Institute. History of Engineering Sciences and Institutions of Higher Education, Riga, Latvia, v. 2, p. 61–75, 2018. DOI: 10.7250/HESIHE.2018.005. Disponível em: https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2018.005.. Acesso em: 6 mar. 2026.