Aviza, Donatas, and Zenonas Turskis. “An Empirical Analysis of Correlation Between the Thickness of a Thermal Insulation Layer of the Floor and the Payback Period”. Journal of Civil Engineering and Management 20, no. 5 (October 20, 2014): 760-766. Accessed November 25, 2024. https://jcem.vgtu.lt/index.php/JCEM/article/view/3170.