Salkov N.A., Zakharova O. N., and Orlov E. V. “THE DEVELOPMENT PATH OF WATER SUPPLY AND SEWAGE SYSTEMS DURING THE FOURTH FIVE‑YEAR PLAN IN THE USSR”. The system technologies, no. 60 (October 19, 2026): 137–142. Accessed October 19, 2026. https://thesystemtechnologies.com/index.php/st/article/view/192.