Mikolas, M., J. Bartonova, J. Magnuskova, and D. Letavkova. “Price of Electricity Vs Different Heating Technologies in Czech Republic”. Communications - Scientific Letters of the University of Zilina, Vol. 16, no. 4, Dec. 2014, pp. 133-8, http://journals.uniza.sk/index.php/communications/article/view/590.