Authors
Katarina Brence
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Edgars Kudurs
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Kārlis Valters
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia