Kirillova, Olga, and Alexandr Markov. “DESIGN AND STUDY OF TIME RELAYS”. HUMAN. ENVIRONMENT. TECHNOLOGIES. Proceedings of the Students International Scientific and Practical Conference, no. 21 (April 19, 2017): 140–142. Accessed November 5, 2024. https://journals23.rta.lv/index.php/HET/article/view/3596.