Authors
Viktorija Terjanika
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Julija Gusca
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