Authors
Vivita Priedniece
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Ieva Pakere
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Guntars Krigers
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia