Plūme, I. et al. 1999. AR ŠĶIDRUMU APSILDĀMU SIVĒNU GRĪDU PANEĻU PĒTĪJUMI. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference. 1, (Jun. 1999), 142–147. DOI:https://doi.org/10.17770/etr1999vol1.1887.