Ruzgys, Audrius, Robertas Volvačiovas, and Česlovas Ignatavičius. 2013. “Analysis of Energy Consumption in Renovated Buildings and Simulation of the Payback Period”. Mokslas – Lietuvos Ateitis / Science – Future of Lithuania 5 (5):513-19. https://doi.org/10.3846/mla.2013.80.