Authors
Vivita Priedniece
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Kriss Spalvins
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Kaspars Ivanovs
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Jelena Pubule
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia