Monstvilas, Edmundas. “Optimal Insulation of District Heating pipelines/Optimalus šiluminių Trasų apšiltinimas”. Journal of Civil Engineering and Management 4, no. 3 (September 30, 1998): 178-184. Accessed December 28, 2024. https://ijspm.vgtu.lt/index.php/JCEM/article/view/9418.