Authors
Girts Bohvalovs
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Andra Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Veronika Liberova
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia