Aliyev Ilqar et al. 2025. INVESTIGATION OF THE EFFECTIVE PLACEMENT OF CLOSING VALVES IN ORDER TO PREVENT GAS LOSSES DURING OPERATION OF PARALLEL NETWORKS. Elmi Əsərlər / Scientific Works of Azerbaijan University of Architecture and Construction. 2 (Oct. 2025). DOI:https://doi.org/10.58225/sw.2024.2-76-81.