Valančius, Kęstutis, Sabina Paulauskaitė, and Violeta Motuzienė. 2015. “Research of Apartment buildings‘ Ventilation Systems and Analysis of System Renewal Options”. Mokslas – Lietuvos Ateitis / Science – Future of Lithuania 7 (4):485-92. https://doi.org/10.3846/mla.2015.825.