Skopec, P., J. Hrdlička, J. Opatřil, and J. Štefanica. “NOx EMISSIONS FROM BUBBLING FLUIDIZED BED COMBUSTION OF LIGNITE COAL”. Acta Polytechnica, vol. 55, no. 4, Aug. 2015, pp. 275-81, doi:10.14311/AP.2015.55.0275.