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2. 4. Rezultaty vykorystannia kotelno-pichnoho palyva, teploenerhii ta elektroenerhii za 2011 rik: stat.biuleten [Results of the use of boiler and furnace fuels, heat and electricity in 2011: statistical bulletin]. (2012). Kyiv: State Statistics Service of Ukraine [in Ukrainian].
3. 5. Rezultaty vykorystannia kotelno-pichnoho palyva, teploenerhii ta elektroenerhii za 2012 rik: stat.biuleten [Results of the use of boiler and furnace fuels, heat and electricity in 2012: statistical bulletin]. (2013). Kyiv: State Statistics Service of Ukraine [in Ukrainian].
4. 6. Rezultaty vykorystannia kotelno-pichnoho palyva, teploenerhii ta elektroenerhii za 2013 rik: stat.biuleten [Results of the use of boiler and furnace fuels, heat and electricity in 2013: statistical bulletin]. (2014). Kyiv: State Statistics Service of Ukraine [in Ukrainian].
5. 7. Pro osnovni pokaznyky roboty opalyuvalnykh kotelen i teplovykh merezh Ukraiiny za 2010 rik: statystychnyi byuleten [On the basic characteristics of the work of Ukrainian heating plants and heat networks in 2010: statistical bulletin]. (2011). Kyiv: State Statistics Service of Ukraine [in Ukrainian].