Authors
Jelena Pubule
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Antra Kalnbalkite
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Erika Teirumnieka
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia