Sigal, I., A. Smikhula, O. Marasin, E. Lavrentsov, and E. Dombrowska. “MODERNIZATION OF GAS BOILERS OF TPP, CHP AND BOILERS ROOMS TO THE EU DIRECTIVE ECOLOGICAL REQUIREMENTS”. Energy Technologies & Resource Saving, no. 4, Dec. 2017, pp. 61-71, doi:10.33070/etars.4.2017.09.