Authors
Sintija Kalna
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Dace Lauka
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Rasa Vaiškūnaitė
Faculty of Environmental Engineering, Vilnius Gediminas Technical University, Vilnius, Lithuania
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Latvia