Rakityanska, N., O. Ievtushenko, O. Dunyak, and V. Demchenko. “PERSPECTIVES OF USING COAXIAL PIPES AS A NEW WAY OF THE HEAT CARRIER TRANSPORTATION IN CENTRAL HEATING SYSTEMS”. Thermophysics and Thermal Power Engineering, Vol. 38, no. 1, Feb. 2016, pp. 54-61, doi:https://doi.org/10.31472/ihe.1.2016.07.