Authors
Anna Lankovska
Faculty of Engineering Economics and Management, Riga Technical University, Riga, Latvia
Katarīna Brence
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dzintars Jaunzems
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia