Yanin, Volodymyr. “Engineer of the Communication Lines Mykola Pavlovych Petrov (1836–1920): Factors for His Scientific views’ Formation”. History of science and technology 10, no. 1(16) (June 5, 2020): 88-99. Accessed July 12, 2026. https://www.hst-journal.com/index.php/hst/article/view/400.