@article{Frączek_Paweł_The_2015,
 author={Frączek, Paweł},
 number={No 1},
 howpublished={online},
 journal={Archives of Mining Sciences},
 year={2015},
 publisher={Committee of Mining PAS},
 title={The Modernization of the Energy Sector in Denmark / Modernizacja Sektora Energii W Danii},
 doi={10.1515/amsc-2015-0026},
}