“AR ŠĶIDRUMU APSILDĀMU SIVĒNU GRĪDU PANEĻU PĒTĪJUMI”. ENVIRONMENT. TECHNOLOGY. RESOURCES. Proceedings of the International Scientific and Practical Conference 1 (June 20, 1999): 142–147. Accessed March 11, 2026. https://archive-journals.rtu.lv/etr/article/view/3443.