Power engineering 2016. Renewable Energy Sources 2016 : 6th International Scientific Conference. Tatranské Matliare, Slovakia. May 31 - June 2, 2016 - Cirák, Július, 1953-; Perný, Milan, 1985-; Farkas Smitková, Miroslava, 1977-; Hutňan, Miroslav, 1960-; Hüttner, Ľudovít, 1946- (Slovak University of Technology, 2016)