Authors
Krista Laktuka
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Ieva Pakere
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Dace Lauka
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Latvia
Anna Volkova
Tallinn University of Technology, Tallinn, Estonia