Authors
Lelde Vistarte
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Anna Kubule
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Liga Rozentale
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Jelena Pubule
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia