Authors
Karlis Dreimanis
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Zane Indzere
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Vaida Sereviciene
Research Institute of Environmental Protection, Vilnius Gediminas Technical University, Vilnius, Lithuania