Zigmunde, Alīda. “The Work of The Graduate of Riga Polytechnic Institute Augusts Baumanis (1883–1966) In Engineering Science and Pedagogy”. History of Engineering Sciences and Institutions of Higher Education 3 (October 23, 2019): 64–76. Accessed March 6, 2026. https://hesihe-journals.rtu.lv/hesihe/article/view/HESIHE.2019.005.