GAITNIECE, Lāsma; ZIGMUNDE, Alīda. Achievements of Engineer, Entrepreneur and Teacher Jānis Baumanis (1878–1945). History of Engineering Sciences and Institutions of Higher Education, Riga, Latvia, v. 3, p. 52–63, 2019. DOI: 10.7250/HESIHE.2019.004. Disponível em: https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2019.004.. Acesso em: 6 mar. 2026.