@ARTICLE{_Contents_2021, volume={vol. 24}, number={No 2}, journal={Polityka Energetyczna - Energy Policy Journal}, howpublished={online}, year={2021}, publisher={Instytut Gospodarki Surowcami Mineralnymi i EnergiÄ… PAN}, type={Contents}, title={Contents}, URL={http://ochroma.man.poznan.pl/Content/120160/PDF-MASTER/Spis%20tre%C5%9Bci%2024-2.pdf}, }