Kovaļčuka, Svetlana, and Alīda Zigmunde. 2023. “Pedagogical and Scientific Heritage of Professor of Riga Polytechnic Institute Mikhail Berlov (1867–1935)”. History of Engineering Sciences and Institutions of Higher Education 7 (October): 65-80. https://doi.org/10.7250/HESIHE.2023.005.