Authors
Uldis Bariss
Institute of Energy Systems and Environment, Riga Technical University, Azenes iela 12/1,, Riga, Latvia
Gatis Bazbauers
Institute of Energy Systems and Environment, Riga Technical University, Azenes iela 12/1,, Riga, Latvia
Andra Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Azenes iela 12/1,, Riga, Latvia
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Azenes iela 12/1,, Riga, Latvia