For citations:
Gazizullin I.M., Dmitriev A.V., Rusakov G.D., Badretdinova G.R. Polyurethane foam insulation: Causes of failure in district heating systems. iPolytech Journal. 2025;29(4):502-512. (In Russ.) https://doi.org/10.21285/1814-3520-2025-4-502-512. EDN: JFTCLA
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