ZIGMUNDE, Alīda; BALDIŅŠ, Alvars. Graduates and students of the Riga Polytechnicum / Riga Polytechnic Institute - participants of the Proclamation of independent Republic of Latvia. History of Engineering Sciences and Institutions of Higher Education, Riga, Latvia, v. 2, p. 12–23, 2018. DOI: 10.7250/HESIHE.2018.002. Disponível em: https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2018.002.. Acesso em: 6 mar. 2026.