Authors
Dagnija Blumberga
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Raimonds Gulbis
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Linda Ievina
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Valdis Vitolins
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Girts Vigants
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Jevgenijs Selivanovs
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia
Dzintars Jaunzems
Institute of Energy Systems and Environment, Riga Technical University, Riga, Latvia